Try testing against rdoc master /cc rails#80

.travis.yml

@@ -1,5 +1,6 @@
 ---
 before_install: gem install bundler
+before_script: bundle exec rake rdoc_master
 rvm:
   - 1.8.7
   - 1.9.3
@@ -10,6 +11,17 @@ rvm:
   - ruby-head
   - jruby-19mode
   - jruby-head
+matrix:
+  include:
+    - { rvm: 1.8.7, env: rdoc=master }
+    - { rvm: 1.9.3, env: rdoc=master }
+    - { rvm: 2.0.0, env: rdoc=master }
+    - { rvm: 2.1.0, env: rdoc=master }
+    - { rvm: 2.2.0, env: rdoc=master }
+    - { rvm: 2.3.0, env: rdoc=master }
+    - { rvm: ruby-head, env: rdoc=master }
+    - { rvm: jruby-19mode, env: rdoc=master }
+    - { rvm: jruby-head, env: rdoc=master }
 notifications:
   email:
     - mail@zzak.io

Gemfile

@@ -4,4 +4,4 @@ gemspec
 
 gem "rake", "< 11"
 gem "minitest"
-
+gem "hoe"

Rakefile

@@ -11,3 +11,16 @@ end
 
 task :default => :test
 task :spec => :test
+
+task :rdoc_master do
+  if ENV["rdoc"]="master"
+    puts "Testing against rdoc master, please wait for install.."
+    sh "git clone --depth=1 https://github.com/rdoc/rdoc" unless Dir.exists?("rdoc")
+    cd "rdoc" do
+      sh "rake"
+      sh "rake install_gem"
+    end
+  else
+    puts "Testing against bundled rdoc.."
+  end
+end