.travis.yml in jekyll-feed-0.4.0 vs .travis.yml in jekyll-feed-0.5.0

@@ -1,20 +1,10 @@
 language: ruby
 rvm:
   - 2.2
-  - 2.1
-  - 2.0
-matrix:
-  include:
-    - # Ruby 1.9
-      rvm: 1.9
-      env: JEKYLL_VERSION=2.0
 env:
   global:
     - NOKOGIRI_USE_SYSTEM_LIBRARIES=true
-  matrix:
-    - JEKYLL_VERSION=3.0
-    - JEKYLL_VERSION=2.5
 cache: bundler
 sudo: false
 before_script: bundle update
 script: ./script/cibuild
 notifications: