Update gratitude to use new gratipay url
Update statistics to work with new gratipay api
Update gratitude to work with Gratipay Public Profiles API
Update guardfile
Update Tips class to work with new Gratipay API
Update graitude to be totally compatible with gratipay
Update Gemfile
Refactor Tips class
Privatize class methods that are used internally
Update changelog and bump to version to 0.2.0
Rubocop: Multi-line method chaining should be done with leading dots.
Merge pull request #4 from JohnKellyFerguson/gratipay

Update Gem to work with New Gratipay API