Resolve PullPayment relative path for Bounties

contracts/bounties/CrowdsaleTokenBounty.sol

@@ -1,6 +1,6 @@
 pragma solidity ^0.4.0;
-import './PullPayment.sol';
-import './../token/CrowdsaleToken.sol';
+import '../PullPayment.sol';
+import '../token/CrowdsaleToken.sol';
 
 /*
  * Bounty

contracts/bounties/SimpleTokenBounty.sol

@@ -1,6 +1,6 @@
 pragma solidity ^0.4.0;
-import './PullPayment.sol';
-import './../token/SimpleToken.sol';
+import '../PullPayment.sol';
+import '../token/SimpleToken.sol';
 
 /*
  * Bounty