Got rid of that cscript-breaking comma.

Author: DanielRosenwasser

src/compiler/commandLineParser.ts

@@ -114,7 +114,7 @@ module ts {
             shortName: "w",
             type: "boolean",
             description: Diagnostics.Watch_input_files,
-        },
+        }
     ];
 
     var shortOptionNames: Map<string> = {};