Add facebook SDK.
Add facebook share button.
Style the share button.
Merge pull request #87 from andreiconstantinescu/master

Add facebook share button.
Merge branch 'master' of github.com:readfwd/macovei

* 'master' of github.com:readfwd/macovei:
  Style the share button.
  Add facebook share button.
  Add facebook SDK.
added preda; disable fb for now