Merge pull request #6 from toolkitchen/master

4/17 master -> stable
Merge pull request #8 from toolkitchen/master

5/9 stable -> master
Merge pull request #9 from Polymer/master

5/14 master -> stable
Merge pull request #10 from Polymer/master

5/15 master -> stable
add license and CLA
Merge branch 'stable'