Exfacebook in progress

Few weeks ago I needed to have facebook api client in my Elixir application. I was looking for a good solution like `koala` did for Ruby community. I need to process a lot of pages and user profiles in the same and as result one of the high important feature was batch requests. I know sometimes it’s better to make the contribution to the other open source projects but Elixir area is quite young and why not to make own solution.

My version is still in progress but anyway it’s covering a lot of graph requests now. I hope it could be helpful for someone. Also I did as part of my learning Elixir and deep reading of Elixir docs.

Working on the new pull request for getting support for real time updates by adding graph calls to `subscriptions` endpoints.