Update to truffle 4.0.0

had to up the gasLimit in test.sh to avoid an out of gas error when deploying the scripts

scripts/test.sh

@@ -41,7 +41,7 @@ start_testrpc() {
   if [ "$SOLIDITY_COVERAGE" = true ]; then
     node_modules/.bin/testrpc-sc --gasLimit 0xfffffffffff --port "$testrpc_port" "${accounts[@]}" > /dev/null &
   else
-    node_modules/.bin/testrpc "${accounts[@]}" > /dev/null &
+    node_modules/.bin/testrpc --gasLimit 0xfffffffffff "${accounts[@]}" > /dev/null &
   fi
 
   testrpc_pid=$!