Added natsec for all lifecycle contracts + bounty.sol, DayLimit.sol and LimitBalance.sol

contracts/lifecycle/Destructible.sol

@@ -5,10 +5,14 @@ import "../ownership/Ownable.sol";
 
 
 /*
- * Destructible
- * Base contract that can be destroyed by owner. All funds in contract will be sent to the owner.
+ * @title Destructible
+ * @dev Base contract that can be destroyed by owner. All funds in contract will be sent to the owner.
  */
 contract Destructible is Ownable {
+
+  /*
+   *@dev The destroy function transfer the current balance to the owner and terminate de lifecycle
+   */
   function destroy() onlyOwner {
     selfdestruct(owner);
   }

contracts/lifecycle/Migrations.sol

@@ -3,8 +3,10 @@ pragma solidity ^0.4.8;
 
 import '../ownership/Ownable.sol';
 
-
-// This is a truffle contract, needed for truffle integration, not meant for use by Zeppelin users. 
+/*
+ * @title Migrations
+ * @dev This is a truffle contract, needed for truffle integration, not meant for use by Zeppelin users.
+ */
 contract Migrations is Ownable {
   uint public lastCompletedMigration;
 

contracts/lifecycle/Pausable.sol

@@ -4,10 +4,9 @@ pragma solidity ^0.4.8;
 import "../ownership/Ownable.sol";
 
 
-/*
- * Pausable
- * Abstract contract that allows children to implement a
- * pause mechanism.
+/**
+ * @title Pausable
+ * @dev Abstract contract that allows children to implement an emergency stop mechanism.
  */
 contract Pausable is Ownable {
   event Pause();
@@ -15,24 +14,35 @@ contract Pausable is Ownable {
 
   bool public paused = false;
 
+
+  /**
+   * @dev modifier to allow actions only when the contract IS paused
+   */
   modifier whenNotPaused() {
     if (paused) throw;
     _;
   }
 
+  /**
+   * @dev modifier to allow actions only when the contract IS NOT paused
+   */
   modifier whenPaused {
     if (!paused) throw;
     _;
   }
 
-  // called by the owner to pause, triggers stopped state
+  /**
+   * @dev called by the owner to pause, triggers stopped state
+   */
   function pause() onlyOwner whenNotPaused returns (bool) {
     paused = true;
     Pause();
     return true;
   }
 
-  // called by the owner to unpause, returns to normal state
+  /**
+   * @dev called by the owner to unpause, returns to normal state
+   */
   function unpause() onlyOwner whenPaused returns (bool) {
     paused = false;
     Unpause();

contracts/lifecycle/TokenDestructible.sol

@@ -6,7 +6,7 @@ import "../token/ERC20Basic.sol";
 
 /// @title TokenDestructible:
 /// @author Remco Bloemen <remco@2π.com>
-///.Base contract that can be destroyed by owner. All funds in contract including
+/// @dev Base contract that can be destroyed by owner. All funds in contract including
 /// listed tokens will be sent to the owner
 contract TokenDestructible is Ownable {