Create a new entry editor via GitHub commit API

To create a new commit, we create a GithubCommiter library.
Add feature for user to edit and update existent entries

We still has some issues about updating a entry.
User can't rename or remove existent entry.
Add tapp gem for debugging
Add entry remove ability
Create a new entry editor via GitHub commit API

To create a new commit, we create a GithubCommiter library.
Create a new entry editor via GitHub commit API

To create a new commit, we create a GithubCommiter library.
Refactor routes definition to change more simple
Prepare gems and assets to deploy app on heroku

* add gems pg and therubyracer-heroku
* invoke rake asstes:precompile
Update public/assets/
Define rake tasks for deployment on heroku
Redirect user to login path when User.author is not found

I decided to use exception handling (=AuthorNotFound) for that flow
Add dirty DRYRUN option