Bumps version to 1.2.1

Fixes travis errors by bumping up ruby version comparison in gemfiles. (

#14)

* Fixes travis errors by bumping up ruby version comparison in gemfiles.

* Adds additional ruby version test for 2.2.2

* Attempts test of ruby 2.3.0 and 2.4.0

Merge pull request #9 from paidapi/v_1.1.1

V 1.1.1

Version 0.1.0

Version 0.0.8

Version 0.0.7

Version 0.0.6

Version 0.0.5

Version 0.0.4

Version 0.0.3