Split up app.js
Add .afignore

Handy for hosting a demo on AppFog.
Show hand icon for pagination and sort controls
Attach stars and hits to index.json

This data will be used for sorting so better have it available in index.
Move gh logic to separate module
Use oauth to auth with gh api

Instead of 60 requests per hour, this allows 5000. Given the amount of
libraries we need to get follower information for this is way better.

In order to use the auth you will need to define a `config.js` file.
Simply copy the provided template, generate oauth key through GitHub UI
and pass it to the utility using the configuration parameter.

In case configuration parameter is not provided it will generate dummy
data instead (handy for testing).
Harden parseGh

Move it and some others to an external module while at it.