Added support for [diff_match_patch-style](http://code.google.com/p/google-diff-match-patch/wiki/API) output

Author: zzen

diff.js

@@ -279,6 +279,15 @@ var JsDiff = (function() {
       }
       return ret.join("");
     }
+    
+    convertChangesToDMP: function(changes){
+      var ret = [], change;
+      for ( var i = 0; i < changes.length; i++) {
+        change = changes[i];
+        ret.push([(change.added ? 1 : change.removed ? -1 : 0), change.value]);
+      }
+      return ret;
+    }
   };
 })();