added the Acts_as_commentable gem to add comments to posts. created migration, added assocasions with post model.
added link from each post to its own show page. The show page will be used to display comments.
regenerated the comment model and migration because of missing indexes. deleted all old migration
Merge branch 'postComments'
added error message when post was not created. Also changed redirect after incorrect creation from home page to user profile page.
Merge branch 'posts'