Merge pull request #21 from rpierreye/rails_4

4.0.0 activerecord
[#69454150] removing initial payment when changing the periodicity
Merge branch 'master' of github.com:hedgeyedev/Billing-Logic
[#2fbc8d0] removed puts statement
Merge branch 'master' of https://github.com/hedgeyedev/Billing-Logic into rails_4