added Users.current() to get current user info
Added Evan Heidtmann to contributors
Merge branch 'develop' of https://github.com/luoqpolyvi/node-gitlab into luoqpolyvi-develop

* 'develop' of https://github.com/luoqpolyvi/node-gitlab:
  added Users.current() to get current user info
Merge branch 'luoqpolyvi-develop' into develop

* luoqpolyvi-develop:
  added Users.current() to get current user info
Coffee-scripted #29