Added addMemberToRole

lib/Client/Client.js

@@ -365,6 +365,24 @@ var Client = (function (_EventEmitter) {
 		});
 	};
 
+	//def addMemberToRole
+
+	Client.prototype.addMemberToRole = function addMemberToRole(member, role) {
+		var callback = arguments.length <= 2 || arguments[2] === undefined ? function (err) {} : arguments[2];
+
+		var self = this;
+		return new Promise(function (resolve, reject) {
+
+			self.internal.addMemberToRole(member, role).then(function () {
+				callback();
+				resolve();
+			})["catch"](function (e) {
+				callback(e);
+				reject(e);
+			});
+		});
+	};
+
 	return Client;
 })(EventEmitter);