Add pry and pry-doc to gemfile.
Add 'about' and 'contact' pages to 'public/'.

These pages should be static and can therefore be served out of 'public' folder.
Rebuild gemset and get rspec running within Sublime.
Add Capybara gem and include Capybara DSL in spec_helper.

The Capybara DSL adds variables like 'page' and functions like 'visit' to rspec.
Create Users controller and associated views and routes(with wrong methods).

User routes are currently wrong. This commit is just for initial setup of Users controller. Routes will be fixed in a later commit.
Create basic signup page spec and get it to green.
Upgrade bin directory for Rails 4
Create 'users' table with core attributes.

Core attributes: first_name, last_name, email, password_digest.
Create initial tests for core attributes and get them to green. Implement has_secure_password.
Fix bug in user email duplication spec: upcase -> upcase!

Spec: "when email address in not unique" was implemented with "upcase" and therefore didn't actually do anything. Switched implementation to use "upcase!" instead, which will modify the email attribute in place.