[feat] signUpOrlogInWithAuthData.

Squashed commits:
[55aecf9] Removed test for logInAnonymously
[35b11da] Removed logAnonymously
[39f3504] Fixed version number

Fixed version number

Renamed method to AV.User.signUpOrlogInWithAuthData

Renamed method to
AV.User.logInAnonymously

Added Function test for both methods
[bdd7c92] Updated date
[d91cfe0] 增加用户方法

1.0.0-rc3-addUserMethods
详情见Change Log

Author: Jack Song

lib/user.js

@@ -359,7 +359,6 @@ module.exports = function(AV) {
         });
       })._thenRunCallbacks(options, this);
     },
-
     /**
      * @see AV.Object#save
      */
@@ -732,6 +731,43 @@ module.exports = function(AV) {
       return user.logIn(options);
    },
 
+    /**
+     * Sign up or logs in a user with a third party auth data(AccessToken).
+     * On success, this saves the session to disk, so you can retrieve the currently
+     * logged in user using <code>current</code>.
+     *
+     * <p>Calls options.success or options.error on completion.</p>
+     * 
+     * @param {Object} data The response json data returned from third party token.
+     * @param {string} platform Available platform for sign up. 
+     * @param {Object} [callback] An object that has an optional success function, that takes no arguments and will be called on a successful puSH. and an error function that takes a AV.Error and will be called if the push failed.
+     * @return {AV.Promise} A promise that is fulfilled with the user when
+     *     the login completes.
+     * @example AV.User.signUpOrlogInWithAuthData(data, platform, {
+         *          success: function(user) {
+         *              //Access user here
+         *          },
+         *          error: function(error) {
+         *              //console.log("error: ", error);
+         *          }
+         *      });
+     * @see {@link https://leancloud.cn/docs/js_guide.html#绑定第三方平台账户}
+     */
+    signUpOrlogInWithAuthData: function (data, platform, callback) {
+        /**
+         * Construct accessToken
+         */
+        return AV.User._logInWith(platform, {
+            "authData": data,
+            success: function (user) {
+                callback.success(user);
+            },
+            error: function (error) {
+                callback.error(error);
+            }
+        });
+    },
+
     /**
      * Logs out the currently logged in user session. This will remove the
      * session from disk, log out of linked services, and future calls to