.travis.yml in rack-dev-mark-0.7.4 vs .travis.yml in rack-dev-mark-0.7.5

- old
+ new

@@ -1,11 +1,14 @@
 language: ruby
 
 rvm:
-  - 1.9.3
   - 2.0.0
   - 2.1
   - 2.2
+
+install:
+  - "gem install bundler"
+  - "bundle install --jobs=3 --retry=3"
 
 env:
   -
   - RACK_VERSION=1.1.0
   - RACK_VERSION=1.2.0