Add a CLI for the module

Start of refactoring the module to work from the CLI and improve the
reporting options. The setup of the module is taken from node-jscs as it
is a very good starting point given the similarities between the module
functionality.
Check files and generate basic report

The entire check for API has been changed to better suit the Node.js
flow.

Instead of loading the compatibility data manually this is now done
by simply requiring the two JSON files. This should work on Node v0.5
and later.

Reading the files from the system is now handled by vow-fs. This is a
promise based way of reading the files.

The console reporter simply outputs the detected APIs and the files in
which the APIs were detected.
Merge branch 'feature/cli' into develop
Update the README
Merge branch 'release/v0.3.0'