Add micropost
Add index for micropost
Add tests fir micropost
Add validate for micropost
Update tests for micropost
Add relationship of users and microposts
Add micropost for factoryGirl
Add sort for micropost
Update user has_many microposts, add dependent destroy
Add validate to content for micropost
Add view micropost in user profile page
Add fake microposts in sample_data
Add css style for micropost
Add micropost controller
Add create micropost and views
Add micropost feed
Add destroy action for micropost controller