added paperclip gem
Merge pull request #1 from Colt/master

working postgres database stuff
fixed database.yml
created user model migration and comment model migration
Created board and post model
Merge pull request #2 from jeesong/master

Created board and post model
added home controller with signin page and routes  and deleted index file from public folder
added controllers: boards, posts and comments
deleted public index file
user login working using devise