adds migration file for tweets
adds model for tweets
adds association for both
Merge pull request #4 from arcin/user_login

User login
fixes merge conflict in user model
Merge pull request #5 from arcin/tweets

Tweets
allows users to login and see their private page
created different route files
Merge pull request #6 from arcin/connect_login_users

Connect login users
created seeds file for tweets
Merge pull request #8 from arcin/tweets

created seeds file for tweets
add public posts