Create a default command to run help if there are no arguments but to fail with non-zero exit code if the command is invalid.

Props to @ggilder.
Add Jekyll::Stevenson#abort_with
Remove duplicate comment
start with Excerpt#output, otherwise call #to_s
Override Excerpt#render_all_layouts to just assign content to output
Debug statements - take them out later
May as well add Stevenson#debug
Moving data around to make sure excerpts have no layouts but that they are still converted with liquid and the proper converter
Remove debug statements
Add a new post, bump @site.posts.size
Dumb tests are helpful anyway
Add categories and tags and test #to_liquid
Unit tests are simple
update categories on the new post to not fuck up old numbers
feature maybe?
1.8.7 doesn't support Time.new(*args), so use Time.parse instead
s/sitej/site/ props @benbalter
Add master branch feed
Merge pull request #1338 from mojombo/abort-with-non-zero-exit-codes

Abort with non-zero exit codes
Update history to reflect merge of #1338