Style checks and more jsdoc.

lib/http-api.js

@@ -26,6 +26,7 @@ var HEADERS = {
 
 /**
  * Construct a MatrixHttpApi.
+ * @constructor
  * @param {Object} opts The options to use for this HTTP API.
  * @param {string} opts.baseUrl Required. The base client-server URL e.g.
  * 'http://localhost:8008'.
@@ -154,7 +155,7 @@ MatrixHttpApi.prototype = {
     _request: function(callback, method, uri, queryParams, data) {
         if (callback !== undefined && !utils.isFunction(callback)) {
             throw Error(
-                "Expected callback to be a function but got "+typeof callback
+                "Expected callback to be a function but got " + typeof callback
             );
         }