Remove trailing whitespace

docs/index.rst

@@ -67,7 +67,7 @@ Solidity Tools
 
 * `Solidity REPL <https://github.com/raineorshine/solidity-repl>`_
     Try Solidity instantly with a command-line Solidity console.
-    
+
 * `solgraph <https://github.com/raineorshine/solgraph>`_
     Visualize Solidity control flow and highlight potential security vulnerabilities.
 

docs/installing-solidity.rst

@@ -101,7 +101,7 @@ installed either by adding the Ethereum PPA (Option 1) or by backporting
     sudo apt-get -y update
     sudo apt-get -y upgrade
     sudo apt-get -y install libcryptopp-dev
-    
+
     ## (Option 2) For those willing to backport libcrypto++:
     #sudo apt-get -y install ubuntu-dev-tools
     #sudo pbuilder create

docs/layout-of-source-files.rst

@@ -101,7 +101,7 @@ and then run the compiler as
 
 As a more complex example, suppose you rely on some module that uses a
 very old version of dapp-bin. That old version of dapp-bin is checked
-out at ``/usr/local/dapp-bin_old``, then you can use 
+out at ``/usr/local/dapp-bin_old``, then you can use
 
 .. code-block:: bash
 

docs/solidity-by-example.rst

@@ -271,7 +271,7 @@ activate themselves.
                 // highestBidder.send(highestBid) is a security risk
                 // because it can be prevented by the caller by e.g.
                 // raising the call stack to 1023. It is always safer
-                // to let the recipient withdraw their money themselves. 
+                // to let the recipient withdraw their money themselves.
                 pendingReturns[highestBidder] += highestBid;
             }
             highestBidder = msg.sender;