fixing capitalization inconsistencies.

packages/kosu-system-contracts/contracts/base/Authorizable.sol

@@ -23,7 +23,7 @@ contract Authorizable {
         @notice Ensures msg.sender is authorized within the AuthorizedAddresses contract
     */
     modifier isAuthorized() {
-        require(authorizedAddress.isAddressAuthorized(msg.sender), "Unauthorized");
+        require(authorizedAddress.isAddressAuthorized(msg.sender), "unauthorized");
         _;
     }
 }

packages/kosu-system-contracts/contracts/lib/KosuToken.sol

@@ -98,7 +98,7 @@ contract KosuToken is ERC20, Authorizable {
     */
     function calculateEtherToToken(uint etherValue) internal view returns (uint) {
         if (_weiPaid == 0 && totalSupply() == 0) {
-            require(etherValue == (2 ether)/10, "First transaction must be .2 ether");
+            require(etherValue == (2 ether)/10, "first transaction must be .2 ether");
             return 10000 ether;
         } else {
             return Formula.calculatePurchaseReturn(totalSupply(), _weiPaid, r, etherValue);