Merge pull request #173 from alirezas/master

Fix code tag in markdown exporting

Merge pull request #157 from SamLau95/patch-1

Stop leading space after entering Markdown

forgot to remove ol

export content as markdown

Merge pull request #132 from teambition/master

修复 enter 键问题 和 支持固定 toolbar

Merge branch 'gh-pages' of github.com:sofish/pen

add bower.json

Merge branch 'master' of github.com:sofish/pen