Merge pull request stripe-ruby-mock#726 from stripe-ruby-mock/travis-fix

Travis fix

Author: alexmamonchik

.travis.yml

@@ -1,5 +1,3 @@
-dist: trusty
-group: deprecated-2017Q2
 sudo: required
 language: ruby
 rvm:
@@ -8,7 +6,6 @@ rvm:
   - 2.6.3
   - 2.7.0
 before_install:
-  - rvm 2.1.10 do gem install mime-types -v 2.6.2
   - gem install bundler -v '< 2'
 before_script:
   - "sudo touch /var/log/stripe-mock-server.log"
@@ -26,4 +23,3 @@ notifications:
     on_success: change  # options: [always|never|change] default: always
     on_failure: always  # options: [always|never|change] default: always
     on_start: false     # default: false
-

spec/spec_helper.rb

@@ -33,6 +33,7 @@
       when '2.4.6'  then ENV['STRIPE_TEST_SECRET_KEY_A']
       when '2.5.5' then ENV['STRIPE_TEST_SECRET_KEY_B']
       when '2.6.3'  then ENV['STRIPE_TEST_SECRET_KEY_C']
+      when '2.7.0'  then ENV['STRIPE_TEST_SECRET_KEY_D']
       end
     else
       api_key = ENV['STRIPE_TEST_SECRET_KEY']