add ApacheConf language

Recognizes httpd/apache2.conf and .htaccess files

lib/linguist/languages.yml

@@ -63,6 +63,16 @@ Ada:
   - .adb
   - .ads
 
+ApacheConf:
+  type: markup
+  aliases:
+  - apache
+  primary_extension: .conf
+  filenames:
+  - .htaccess
+  - httpd.conf
+  - apache2.conf
+
 Apex:
   type: programming
   lexer: Text only

test/test_language.rb

@@ -61,6 +61,7 @@ class TestLanguage < Test::Unit::TestCase
     assert_equal Language['ASP'], Language.find_by_alias('aspx')
     assert_equal Language['ASP'], Language.find_by_alias('aspx-vb')
     assert_equal Language['ActionScript'], Language.find_by_alias('as3')
+    assert_equal Language['ApacheConf'], Language.find_by_alias('apache')
     assert_equal Language['Assembly'], Language.find_by_alias('nasm')
     assert_equal Language['Batchfile'], Language.find_by_alias('bat')
     assert_equal Language['C#'], Language.find_by_alias('c#')
@@ -230,6 +231,8 @@ class TestLanguage < Test::Unit::TestCase
     assert_equal [Language['Ruby']], Language.find_by_filename('foo/bar.rb')
     assert_equal [Language['Ruby']], Language.find_by_filename('Rakefile')
     assert_equal [Language['Ruby']], Language.find_by_filename('PKGBUILD.rb')
+    assert_equal Language['ApacheConf'], Language.find_by_filename('httpd.conf').first
+    assert_equal [Language['ApacheConf']], Language.find_by_filename('.htaccess')
     assert_equal ['C', 'C++', 'Objective-C'], Language.find_by_filename('foo.h').map(&:name).sort
     assert_equal [], Language.find_by_filename('rb')
     assert_equal [], Language.find_by_filename('.rb')