Upgrade to Rails 4 beta1
Get rid of Rails 4 related warnings
Add a TODO file with some tasks
Explicitly define methods to be run after initialization
Extract miniumum donation amount to config constant
Extract round expired logic to class method
Simplify logic in Round.closed method
Add Donation.get_random_amount class method
Simplify HomeController tests
Use mock instead of generating random values in test
Move Donation::get_random_amount mocking to test_helper
Extract Donation secret size to class constant
Extract Round URL length to class constant
Split Donation.secret tests
Create SecureRandom.hex stubbing helpers
Use stubs instead of randomly generated data in test
Add Round.success? method
Simplify logic using Round.success? method
Remove temporary variables in RoundTest
Don't test ActiveRecord functionality