Merge pull request #325 from greghendershott/racket-lexer

Use new Racket lexer from pygments.rb 0.3.3

lib/linguist/languages.yml

@@ -1032,10 +1032,11 @@ RHTML:
 
 Racket:
   type: programming
-  lexer: Scheme
+  lexer: Racket
   color: "#ae17ff"
   primary_extension: .rkt
   extensions:
+  - .rkt
   - .rktd
   - .rktl
 

test/test_language.rb

@@ -45,7 +45,7 @@ class TestLanguage < Test::Unit::TestCase
     assert_equal Lexer['S'], Language['R'].lexer
     assert_equal Lexer['Scheme'], Language['Emacs Lisp'].lexer
     assert_equal Lexer['Scheme'], Language['Nu'].lexer
-    assert_equal Lexer['Scheme'], Language['Racket'].lexer
+    assert_equal Lexer['Racket'], Language['Racket'].lexer
     assert_equal Lexer['Scheme'], Language['Scheme'].lexer
     assert_equal Lexer['Standard ML'], Language['Standard ML'].lexer
     assert_equal Lexer['TeX'], Language['TeX'].lexer