Add .cordova directory creation to build tasks buildTree function.

Fixes the issue on iOS, where nothing get's copied to .cordova directory if it's not first created like other directories.
Merge pull request #5 from skarjalainen/patch-1

Add .cordova directory creation to build tasks buildTree function.
Update README.md

Adds detailed instructions for running the included tests.
Removes comment banner
Adds explicit license to README.md
Adds grunt-bump as development dependency
Release notes for 0.3.0
Adds grunt-bump
Release v0.3.0
Disable automatic push on grunt:bump
Change run phonegap command to install