Fixed issue with eval and minification with AjaxMin

Eval does not play nice with variable renaming that is commonly used by minifiers.
Merge pull request #1 from weazl/patch-1

Fixed issue with eval and minification with AjaxMin
Regenerate rainbow.min.js
added module.exports for Browserify
changed package name (to avoid conflict)
added basic example
Regenerate rainbow.min.js