Resolve check

Very simple resolve incdedent button.

![snowmanio__be_a_little_snowy](https://cloud.githubusercontent.com/assets/92554/5507740/edc05c8a-87b6-11e4-8198-f14dc9f8cdb3.png)

@keydunov I'll tune this PR maybe. It's :fire:, It's :snowman: (as much as fire and snowman are compatible).