Merge pull request #101 from sofish/master

merge to gh-pages
Merge branch 'gh-pages' of github.com:sofish/pen
add auto-link
Add Teambition link
Merge pull request #108 from fritx/patch-1

Add Teambition link
Merge pull request #109 from teambition/master

add auto-link
Merge branch 'master' of github.com:sofish/pen
fixed #112 : `pen._sel` is undefined
Merge pull request #1 from sofish/master

merge latest change