added tutorial for list comps and regex
Merge pull request #30 from florapdx/master

list comprehensions and regex "handout"
Merge pull request #29 from jarrighi/master

Updated post templates
fix misc markdown errors
escaped all brackets so post will pass maruku
added new styles
changed default layout
added header image
Merge remote-tracking branch 'upstream/master'
hopefully fixed rendering on github
Merge pull request #31 from florapdx/master

New look and tutorial post
Updated stylesheet; removed default img treatment
updated member template, removed @ from twitter_handle
added logo to default template and relevant styles'