fix: the result of 'npm run lint:sol:fix'

contracts/Bounty.sol

@@ -1,8 +1,8 @@
 pragma solidity ^0.4.18;
 
 
-import './payment/PullPayment.sol';
-import './lifecycle/Destructible.sol';
+import "./payment/PullPayment.sol";
+import "./lifecycle/Destructible.sol";
 
 
 /**

contracts/crowdsale/CappedCrowdsale.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
-import '../math/SafeMath.sol';
-import './Crowdsale.sol';
+import "../math/SafeMath.sol";
+import "./Crowdsale.sol";
 
 /**
  * @title CappedCrowdsale

contracts/crowdsale/Crowdsale.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
-import '../token/MintableToken.sol';
-import '../math/SafeMath.sol';
+import "../token/MintableToken.sol";
+import "../math/SafeMath.sol";
 
 /**
  * @title Crowdsale

contracts/crowdsale/FinalizableCrowdsale.sol

@@ -1,8 +1,8 @@
 pragma solidity ^0.4.18;
 
-import '../math/SafeMath.sol';
-import '../ownership/Ownable.sol';
-import './Crowdsale.sol';
+import "../math/SafeMath.sol";
+import "../ownership/Ownable.sol";
+import "./Crowdsale.sol";
 
 /**
  * @title FinalizableCrowdsale

contracts/crowdsale/RefundVault.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
-import '../math/SafeMath.sol';
-import '../ownership/Ownable.sol';
+import "../math/SafeMath.sol";
+import "../ownership/Ownable.sol";
 
 /**
  * @title RefundVault

contracts/crowdsale/RefundableCrowdsale.sol

@@ -1,9 +1,9 @@
 pragma solidity ^0.4.18;
 
 
-import '../math/SafeMath.sol';
-import './FinalizableCrowdsale.sol';
-import './RefundVault.sol';
+import "../math/SafeMath.sol";
+import "./FinalizableCrowdsale.sol";
+import "./RefundVault.sol";
 
 
 /**

contracts/lifecycle/Migrations.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import '../ownership/Ownable.sol';
+import "../ownership/Ownable.sol";
 
 /**
  * @title Migrations

contracts/mocks/BasicTokenMock.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import '../token/BasicToken.sol';
+import "../token/BasicToken.sol";
 
 
 // mock class using BasicToken

contracts/mocks/BurnableTokenMock.sol

@@ -1,6 +1,6 @@
 pragma solidity ^0.4.18;
 
-import '../token/BurnableToken.sol';
+import "../token/BurnableToken.sol";
 
 contract BurnableTokenMock is BurnableToken {
 

contracts/mocks/CappedCrowdsaleImpl.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import '../crowdsale/CappedCrowdsale.sol';
+import "../crowdsale/CappedCrowdsale.sol";
 
 
 contract CappedCrowdsaleImpl is CappedCrowdsale {

contracts/mocks/DetailedERC20Mock.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
-import '../token/StandardToken.sol';
-import '../token/DetailedERC20.sol';
+import "../token/StandardToken.sol";
+import "../token/DetailedERC20.sol";
 
 contract DetailedERC20Mock is StandardToken, DetailedERC20 {
   function DetailedERC20Mock(string _name, string _symbol, uint8 _decimals) DetailedERC20(_name, _symbol, _decimals) public {}

contracts/mocks/ECRecoveryMock.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import '../ECRecovery.sol';
+import "../ECRecovery.sol";
 
 
 contract ECRecoveryMock {

contracts/mocks/ERC23TokenMock.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import '../token/BasicToken.sol';
+import "../token/BasicToken.sol";
 
 
 contract ERC23ContractInterface {

contracts/mocks/FinalizableCrowdsaleImpl.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import '../crowdsale/FinalizableCrowdsale.sol';
+import "../crowdsale/FinalizableCrowdsale.sol";
 
 
 contract FinalizableCrowdsaleImpl is FinalizableCrowdsale {

contracts/mocks/LimitBalanceMock.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import '../LimitBalance.sol';
+import "../LimitBalance.sol";
 
 
 // mock class using LimitBalance

contracts/mocks/PausableMock.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import '../lifecycle/Pausable.sol';
+import "../lifecycle/Pausable.sol";
 
 
 // mock class using Pausable

contracts/mocks/PausableTokenMock.sol

@@ -1,6 +1,6 @@
 pragma solidity ^0.4.18;
 
-import '../token/PausableToken.sol';
+import "../token/PausableToken.sol";
 
 // mock class using PausableToken
 contract PausableTokenMock is PausableToken {

contracts/mocks/PullPaymentMock.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import '../payment/PullPayment.sol';
+import "../payment/PullPayment.sol";
 
 
 // mock class using PullPayment

contracts/mocks/RBACMock.sol

@@ -1,6 +1,6 @@
 pragma solidity ^0.4.8;
 
-import '../ownership/rbac/RBAC.sol';
+import "../ownership/rbac/RBAC.sol";
 
 
 contract RBACMock is RBAC {

contracts/mocks/ReentrancyMock.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
-import '../ReentrancyGuard.sol';
-import './ReentrancyAttack.sol';
+import "../ReentrancyGuard.sol";
+import "./ReentrancyAttack.sol";
 
 contract ReentrancyMock is ReentrancyGuard {
 

contracts/mocks/RefundableCrowdsaleImpl.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import '../crowdsale/RefundableCrowdsale.sol';
+import "../crowdsale/RefundableCrowdsale.sol";
 
 
 contract RefundableCrowdsaleImpl is RefundableCrowdsale {

contracts/mocks/SafeERC20Helper.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
-import '../token/ERC20.sol';
-import '../token/SafeERC20.sol';
+import "../token/ERC20.sol";
+import "../token/SafeERC20.sol";
 
 contract ERC20FailingMock is ERC20 {
   function transfer(address, uint256) public returns (bool) {

contracts/mocks/SafeMathMock.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import '../math/SafeMath.sol';
+import "../math/SafeMath.sol";
 
 
 contract SafeMathMock {

contracts/mocks/StandardTokenMock.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import '../token/StandardToken.sol';
+import "../token/StandardToken.sol";
 
 
 // mock class using StandardToken

contracts/ownership/Claimable.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import './Ownable.sol';
+import "./Ownable.sol";
 
 
 /**

contracts/ownership/Contactable.sol

@@ -1,6 +1,6 @@
 pragma solidity ^0.4.18;
 
-import './Ownable.sol';
+import "./Ownable.sol";
 
 /**
  * @title Contactable token

contracts/ownership/DelayedClaimable.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import './Claimable.sol';
+import "./Claimable.sol";
 
 
 /**

contracts/ownership/rbac/RBAC.sol

@@ -1,6 +1,6 @@
 pragma solidity ^0.4.18;
 
-import './Roles.sol';
+import "./Roles.sol";
 
 
 /**

contracts/payment/PullPayment.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import '../math/SafeMath.sol';
+import "../math/SafeMath.sol";
 
 
 /**

contracts/payment/SplitPayment.sol

@@ -1,6 +1,6 @@
 pragma solidity ^0.4.18;
 
-import '../math/SafeMath.sol';
+import "../math/SafeMath.sol";
 
 /**
  * @title SplitPayment

contracts/token/BasicToken.sol

@@ -1,8 +1,8 @@
 pragma solidity ^0.4.18;
 
 
-import './ERC20Basic.sol';
-import '../math/SafeMath.sol';
+import "./ERC20Basic.sol";
+import "../math/SafeMath.sol";
 
 
 /**

contracts/token/BurnableToken.sol

@@ -1,6 +1,6 @@
 pragma solidity ^0.4.18;
 
-import './BasicToken.sol';
+import "./BasicToken.sol";
 
 /**
  * @title Burnable Token

contracts/token/CappedToken.sol

@@ -1,6 +1,6 @@
 pragma solidity ^0.4.11;
 
-import './MintableToken.sol';
+import "./MintableToken.sol";
 
 /**
  * @title Capped token

contracts/token/DetailedERC20.sol

@@ -1,6 +1,6 @@
 pragma solidity ^0.4.18;
 
-import './ERC20.sol';
+import "./ERC20.sol";
 
 contract DetailedERC20 is ERC20 {
   string public name;

contracts/token/ERC20.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import './ERC20Basic.sol';
+import "./ERC20Basic.sol";
 
 
 /**

contracts/token/MintableToken.sol

@@ -1,8 +1,8 @@
 pragma solidity ^0.4.18;
 
 
-import './StandardToken.sol';
-import '../ownership/Ownable.sol';
+import "./StandardToken.sol";
+import "../ownership/Ownable.sol";
 
 
 

contracts/token/PausableToken.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
-import './StandardToken.sol';
-import '../lifecycle/Pausable.sol';
+import "./StandardToken.sol";
+import "../lifecycle/Pausable.sol";
 
 /**
  * @title Pausable token

contracts/token/SafeERC20.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
-import './ERC20Basic.sol';
-import './ERC20.sol';
+import "./ERC20Basic.sol";
+import "./ERC20.sol";
 
 /**
  * @title SafeERC20

contracts/token/StandardToken.sol

@@ -1,8 +1,8 @@
 pragma solidity ^0.4.18;
 
 
-import './BasicToken.sol';
-import './ERC20.sol';
+import "./BasicToken.sol";
+import "./ERC20.sol";
 
 
 /**

contracts/token/TokenTimelock.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import './ERC20Basic.sol';
+import "./ERC20Basic.sol";
 import "../token/SafeERC20.sol";
 
 /**

contracts/token/TokenVesting.sol

@@ -1,9 +1,9 @@
 pragma solidity ^0.4.18;
 
-import './ERC20Basic.sol';
-import './SafeERC20.sol';
-import '../ownership/Ownable.sol';
-import '../math/SafeMath.sol';
+import "./ERC20Basic.sol";
+import "./SafeERC20.sol";
+import "../ownership/Ownable.sol";
+import "../math/SafeMath.sol";
 
 /**
  * @title TokenVesting

test/mocks/MathMock.sol

@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 
-import '../../contracts/math/Math.sol';
+import "../../contracts/math/Math.sol";
 
 
 contract MathMock {