Browserify bug with symbolic link file

reproduce step

1. install npminstall tool: npm install npminstall -g
2. clone this repo to your disk.
3. run npm start
4. then you can see the error : "Cannot find module '../../../../.1.1.4@is-buffer/index.js' from '/YOUR_LOCAL_PATH/browserify-bug/node_modules/.1.0.2@core-util-is/lib'"

The bugfix PR is: browserify/module-deps#122