Merge pull request #10 from acreilly/style2

Style2
Encode passwords using bcrypt.
Update create_users migration and gemfile to accomodate bcrypt.
displaying followers and following
Merge pull request #11 from acreilly/bcrypt

Encode passwords using bcrypt.
Merge branch 'master' of https://github.com/acreilly/tweet_of_hearts into style2
Add validations for password length and email format.
Merge pull request #12 from acreilly/relationship_page

Relationship page
Merge branch 'master' of https://github.com/acreilly/tweet_of_hearts into validations
Merge pull request #13 from acreilly/validations

Validations
targetuser