Revert bad version bump

Revert "Merge pull request stripe-ruby-mock#398 from natekratchman/bump-version" This reverts commit bb5f38f, reversing changes made to 64f1275.

Author: gilbert

README.md

@@ -12,7 +12,7 @@ This gem has unexpectedly grown in popularity and I've gotten pretty busy, so I'
 
 In your gemfile:
 
- gem 'stripe-ruby-mock', '~> 2.3.2', :require => 'stripe_mock'
+ gem 'stripe-ruby-mock', '~> 2.3.1', :require => 'stripe_mock'
 
 ## Features
 

lib/stripe_mock/version.rb

@@ -1,4 +1,4 @@
 module StripeMock
  # stripe-ruby-mock version
- VERSION = "2.3.2"
+ VERSION = "2.3.1"
 end