added events in mouse module

@@ -25,6 +25,7 @@ var Mouse = function(casper) {
             throw new Error('Unsupported mouse event type: ' + type);
         }
         args = Array.prototype.slice.call(args); // cast Arguments -> Array
+        casper.emit('casper.mouse.click', args);
         switch (args.length) {
             case 0:
                 throw new Error('Too few arguments');