Fix missing space in plugin_new_command
Pillow 2.0.0 supports Python 3 out-of-the-box so we can remove our workarounds.
Merge pull request #392 from neilmb/master

Fix missing space in new_post error message
Python 2.x can stay with any Pillow while Python 3 requires at least 2.0.0
Merge branch 'master' of https://github.com/ralsina/nikola into pillow
Merge pull request #393 from okin/pillow

Pillow 2.0.0 supports Python 3 out-of-the-box so we can remove our workarounds.
Merge branch 'master' of https://github.com/ralsina/nikola into avoid391