longer file extensions to comply with HTML5 convention class=language-javascript per issue 230

Author: mikesamuel@gmail.com

src/prettify.js

@@ -1321,13 +1321,13 @@ var REGEXP_PRECEDER_PATTERN = '(?:^^\\.?|[+-]|[!=]=?=?|\\#|%=?|&&?=?|\\(|\\*=?|[
           'keywords': SH_KEYWORDS,
           'hashComments': true,
           'multiLineStrings': true
-        }), ['bsh', 'csh', 'sh']);
+        }), ['bash', 'bsh', 'csh', 'sh']);
   registerLangHandler(sourceDecorator({
           'keywords': PYTHON_KEYWORDS,
           'hashComments': true,
           'multiLineStrings': true,
           'tripleQuotedStrings': true
-        }), ['cv', 'py']);
+        }), ['cv', 'py', 'python']);
   registerLangHandler(sourceDecorator({
           'keywords': PERL_KEYWORDS,
           'hashComments': true,
@@ -1339,12 +1339,12 @@ var REGEXP_PRECEDER_PATTERN = '(?:^^\\.?|[+-]|[!=]=?=?|\\#|%=?|&&?=?|\\(|\\*=?|[
           'hashComments': true,
           'multiLineStrings': true,
           'regexLiterals': true
-        }), ['rb']);
+        }), ['rb', 'ruby']);
   registerLangHandler(sourceDecorator({
           'keywords': JSCRIPT_KEYWORDS,
           'cStyleComments': true,
           'regexLiterals': true
-        }), ['js']);
+        }), ['javascript', 'js']);
   registerLangHandler(sourceDecorator({
           'keywords': COFFEE_KEYWORDS,
           'hashComments': 3,  // ### style block comments