Merge pull request #23 from jasonamyers/master

Blog post for Monday
fixed formatting issues
adding google analytics
Stub for 2013-02-27 post.
Blog post: diff in 50 lines.
Fix typo (extra period).
Fix numbering in diffing post.
Draft of post on comprehensions and generators.
Merge branch 'posts'
Remove one reference and add another.
Use xrange in fib()
Merge pull request #24 from tsclausing/master

Post for Wed, 2/27
Typos
Merge branch 'master' into posts
Merge pull request #25 from tsclausing/master

Typos