Merge pull request #861 from github/add_crystal

Add crystal

lib/linguist/languages.yml

@@ -382,6 +382,12 @@ Creole:
   wrap: true
   primary_extension: .creole
 
+Crystal:
+  type: programming
+  lexer: Ruby
+  primary_extension: .cr
+  ace_mode: ruby
+  
 Cucumber:
   lexer: Gherkin
   primary_extension: .feature

test/test_language.rb

@@ -40,6 +40,7 @@ class TestLanguage < Test::Unit::TestCase
     assert_equal Lexer['REBOL'], Language['Rebol'].lexer
     assert_equal Lexer['RHTML'], Language['HTML+ERB'].lexer
     assert_equal Lexer['RHTML'], Language['RHTML'].lexer
+    assert_equal Lexer['Ruby'], Language['Crystal'].lexer
     assert_equal Lexer['Ruby'], Language['Mirah'].lexer
     assert_equal Lexer['Ruby'], Language['Ruby'].lexer
     assert_equal Lexer['S'], Language['R'].lexer