Remove bops. browserify's buffer works better now!

Browserify now uses native-buffer-browserify
(https://github.com/feross/native-buffer-browserify), a browser Buffer
implementation that is backed by Uint8Array so it’s fast. And we get
to keep the node API that we’re familiar with. Best of both worlds!
Merge pull request #14 from feross/remove-bops

Remove bops. browserify's buffer works better now!