Add listener for error on browserify instance
Add listener for error on browserify instance

Heng-xiu/mochify.js,mantoni/mochify.js,mantoni/mochify.js,Heng-xiu/mochify.js,Swaagie/mochify.js,jhytonen/mochify.js,mantoni/mochify.js,boneskull/mochify.js,jhytonen/mochify.js,Swaagie/mochify.js,boneskull/mochify.js