Merge pull request #14 from ahsterling/steph

Steph
adds test for set_user_id
another test for set_user_id
Merge pull request #15 from ahsterling/tools

Tools
adds index action to post controller
adds get show tests for post controller
show action assigns @post
adds post show page
all the calendar things
Merge pull request #16 from ahsterling/posts

Posts
fix merge conflicts