Merge pull request #15 from ksin/ajax_login_form

Ajax login form
Merge pull request #16 from ksin/ajax_login_form

Ajax login form
create rspec tests for controller
fix merge conflicts
feature specs for valid log in and sign up info
Update route names for restfulness
add pseudocode for preprocessing logic
Merge pull request #17 from raghav1987/Preprocess_Bike_Data

Preprocess bike data
Create user. Create ride pending
create closest bike and open dock methods
Merge pull request #18 from DineshRai/create_helper_methods_for_closest_stations

create closest bike and open dock methods
User sign up and log in controller actions
Log in/create and add ride to user