made the add a friend feature connect with adding a friend to a list
Merge branch 'master' into expenses_list
added integration tests to master
Bills weren't being created because of the way Ruby 1.9 parses dates (it thinks the first number is the day, not the month)
Merge branch 'master' into expenses_list
added list member avatars to the top of the list show page
fixed typo on bill create
hard-coded list and bills in bills spec