Update .travis

Author: pitr-ch

.travis.yml

@@ -3,19 +3,22 @@ language: ruby
 cache: bundler
 
 rvm:
+  # start with the latest
   - 2.3.1
-  - 2.2.3
-  - 2.2.2
-  - 2.1.5
-  - 2.0.0
+  - jruby-9.1.5.0
+
+  # older versions
+  - 2.2
+  - 2.1
+  - 2.0
   - 1.9.3
-  - ruby-head
-  - jruby-1.7.19
-  - jruby-9.0.1.0
-  - jruby-9.0.3.0
+
   - jruby-9.0.5.0
+  - jruby-1.7.26
+
+  - ruby-head
   - jruby-head
-  - rbx-2
+
   - rbx
 
 jdk:
@@ -39,7 +42,6 @@ matrix:
     - rvm: ruby-head
     - rvm: jruby-head
     - rvm: 1.9.3
-    - rvm: rbx-2
     - rvm: rbx
     - rvm: jruby-head
       jdk: oraclejdk8

Gemfile

@@ -13,6 +13,7 @@ group :development do
   # documentation
   gem 'countloc', '~> 0.4.0', :platforms => :mri, :require => false
   gem 'yard', '~> 0.8.7.6', :require => false
+  # TODO (pitr-ch 15-Oct-2016): does not work on 1.9.3 anymore
   gem 'inch', '~> 0.6.3', :platforms => :mri, :require => false
   gem 'redcarpet', '~> 3.3.2', platforms: :mri # understands github markdown
 end