Update rspec dependency to ~> 3.2

Author: sferik

Gemfile

@@ -8,7 +8,7 @@ group :test do
   gem 'mime-types', '~> 1.25', :platforms => [:jruby, :ruby_18]
   gem 'rack-test'
   gem 'rest-client', '~> 1.6.0', :platforms => [:jruby, :ruby_18]
-  gem 'rspec', '~> 3.0.0'
+  gem 'rspec', '~> 3.2'
   gem 'rubocop', '>= 0.30', :platforms => [:ruby_19, :ruby_20, :ruby_21, :ruby_22]
   gem 'simplecov', '>= 0.9'
   gem 'webmock'