VERSION BUMP: 0.3.9

## Included
* Added `example/` directory to be able to test alertify.js during development without copying files to other directories
* Updated grunt to 0.4. Running `npm install` from the root alertify.js directory will install all required dependencies to be able to build/test/lint alertify.js
* Reversed the order of the log messages so new messages appear at the bottom instead of the top of the list. It makes it less jerky when multiple logs are shown and one goes away.

## Fixes
* resolve button reverse focus issue #91 
* resolve hang on older iOS #133