Merge "Initial JSDuck implementation"

diff --cc .gitignore
Simple merge

diff --cc resources/mediawiki/mediawiki.js
index 68a3a09,73d5635..b5b42e1
--- 1/resources/mediawiki/mediawiki.js
--- 2/resources/mediawiki/mediawiki.js
+++ b/resources/mediawiki/mediawiki.js
@@@ -116,18 -115,17 +115,17 @@@ var mw = ( function ( $, undefined ) 
        };
  
        /**
-        * Message
-        *
         * Object constructor for messages,
         * similar to the Message class in MediaWiki PHP.
+        * @class mw.Message
         *
-        * @param map Map Instance of mw.Map
-        * @param key String
-        * @param parameters Array
-        * @return Message
+        * @constructor
+        * @param {mw.Map} map Message storage
+        * @param {string} key
+        * @param {Array} [parameters]
         */
        function Message( map, key, parameters ) {
 -              this.format = 'plain';
 +              this.format = 'text';
                this.map = map;
                this.key = key;
                this.parameters = parameters === undefined ? [] : slice.call( parameters );