Add RDoc

lib/linguist/language.rb

@@ -25,7 +25,7 @@ module Linguist
     #
     # Returns an array
     def self.detectable_markup
-      ["CSS", "Less", "Sass", "Markdown", "Textile", "reStructuredText", "AsciiDoc"]
+      ["CSS", "Less", "Sass", "Markdown", "Textile", "reStructuredText", "AsciiDoc", "RDoc"]
     end
     # Internal: Create a new Language object

lib/linguist/languages.yml

@@ -1149,6 +1149,13 @@ Rebol:
 Redcode:
   primary_extension: .cw
+RDoc:
+  type: markup
+  lexer: Text only
+  ace_mode: rdoc
+  wrap: true
+  primary_extension: .rdoc
+
 Rouge:
   type: programming
   lexer: Clojure