Merge pull request #127 from tmcw/whitespace-ocd

Trailing whitespace OCD fix.

mustache.js

@@ -299,7 +299,7 @@ var Mustache = function() {
       s = String(s === null ? "" : s);
       return s.replace(/&(?!\w+;)|["'<>\\]/g, function(s) {
         switch(s) {
-        case "&": return "&amp;";        
+        case "&": return "&amp;";
         case '"': return '&quot;';
         case "'": return '&#39;';
         case "<": return "&lt;";