The beneficiary parameter of claimRefund is replaced with refundee (#1481)

* signing prefix added

* Minor improvement

* Tests changed

* Successfully tested

* Minor improvements

* Minor improvements

* Revert "Dangling commas are now required. (#1359)"

This reverts commit a688977.

* updates

* fixes #1404

* approve failing test

* suggested changes done

* ISafeERC20 removed

* conflict fixes

* fixes #1456

Author: Aniket-Engg

contracts/crowdsale/distribution/RefundableCrowdsale.sol

@@ -50,13 +50,13 @@ contract RefundableCrowdsale is FinalizableCrowdsale {
 
   /**
    * @dev Investors can claim refunds here if crowdsale is unsuccessful
-   * @param beneficiary Whose refund will be claimed.
+   * @param refundee Whose refund will be claimed.
    */
-  function claimRefund(address beneficiary) public {
+  function claimRefund(address refundee) public {
     require(finalized());
     require(!goalReached());
 
-    _escrow.withdraw(beneficiary);
+    _escrow.withdraw(refundee);
   }
 
   /**