Create a view to render user's information

Apply REST architecture for User model
Create action in User controller to show basic information
Create a view to exhibit user's name and email
Install Factory Girl gem
Write test for user profile page
Fix the incorrect user profile test
Create Factory for profile test
Add user name to profile page
Lower bcrypt's cost function in test environment
Add Gravatar to user profile
Add user sidebar to user profile
Create Signup page

Create form for user registration
Create validation to prevent user registering with empty data
Create view to render error message for invalid user registration
Create a message welcoming new user after he registers
Create partial to display invalid data error during user registration