mod7 updates

1. Completed the “Implement the User Profile Page” assignment.

2. Completed the “People I Follow Page” Assignment.

3. Completed the “Follow a Person” Assignment.

4. Completed the “Feature Spec for Social Networking Features”
Assignment.
mod7 update

Made code change to allow_to_follow? method to improve readability, per
Roy’s suggestion.
Merge pull request #9 from jlevinger/mod7

mod7 updates