added user venmo model, controllers. Redirecting to new user venmo after sign up/in
Successfully pulling in info for confirmed venmo accounts and storing in user_venmo
Successfully sending money via Venmoga
Added check for payments that have already been made
Added checks to ensure that users have connected to venmo before creating campaigns and making pledges
Changed user_venmo to venmo_account, all tests passing
Added error checking based on funded campaigned, charged pledges
Refactored payment processing methods, added new fields to gift and pledge
added method to check if all gift payments have been settled
Added few comments for methods in gift model
Added method to check for duplicate user pledges on create and update
All tests passing