Update /publicRooms to use the new pagination API

lib/base-apis.js

@@ -415,12 +415,35 @@ MatrixBaseApis.prototype.roomInitialSync = function(roomId, limit, callback) {
 // =========================
 
 /**
+ * @param {string} options.server The remote server to query for the room list.
+ *                                Optional. If unspecified, get the local home
+ *                                server's public room list.
+ * @param {number} options.limit Maximum number of entries to return
+ * @param {string} options.since Token to paginate from
+ * @param {object} options.filter Filter parameters
+ * @param {string} options.filter.generic_search_term String to search for
  * @param {module:client.callback} callback Optional.
  * @return {module:client.Promise} Resolves: TODO
  * @return {module:http-api.MatrixError} Rejects: with an error response.
  */
-MatrixBaseApis.prototype.publicRooms = function(callback) {
+MatrixBaseApis.prototype.publicRooms = function(options, callback) {
-    return this._http.authedRequest(callback, "GET", "/publicRooms");
+    if (typeof(options) == 'function') {
+        callback = options;
+        options = {};
+    }
+    if (options === undefined) {
+        options = {};
+    }
+
+    var query_params = {};
+    if (options.server) {
+        query_params.server = options.server;
+        delete options.server;
+    }
+
+    return this._http.authedRequest(
+        callback, "POST", "/publicRooms", query_params, options
+    );
 };
 
 /**