.travis.yml in omniauth-1.2.1 vs .travis.yml in omniauth-1.2.2

@@ -1,10 +1,5 @@
-before_install:
-  - gem update bundler
-  - bundle --version
-  - gem update --system 2.1.11
-  - gem --version
 bundler_args: --without development
 gemfile:
   - Gemfile
   - Gemfile.rack-1.3.x
 language: ruby
@@ -12,10 +7,10 @@
   - 1.8.7
   - 1.9.2
   - 1.9.3
   - 2.0.0
   - 2.1.0
-  - rbx
+  - rbx-2
   - ruby-head
 matrix:
   include:
     - rvm: jruby-18mode
       env: JRUBY_OPTS="$JRUBY_OPTS --debug"