Adding the ability to grab skills from the LinkedinAPI.
Merge pull request #9 from gotoAndBliss/GrabSkillsFeature

Adding the ability to grab skills from the LinkedinAPI.
Adding proper json prerequisites and json dump to add_shares.
Merge pull request #12 from gotoAndBliss/master

Adding proper json prerequisites and json dump to add_shares.
Merge branch 'master' of https://github.com/emorikawa/linkedin-oauth2
Don't conflict with Twitter gem