added createRole, updateRole and deleteRole

lib/Client/Client.js

@@ -325,6 +325,46 @@ var Client = (function (_EventEmitter) {
 		});
 	};
 
+	//def createRole
+
+	Client.prototype.createRole = function createRole(server) {
+		var data = arguments.length <= 1 || arguments[1] === undefined ? null : arguments[1];
+		var callback = arguments.length <= 2 || arguments[2] === undefined ? function (err, res) {} : arguments[2];
+
+		var self = this;
+		return new Promise(function (resolve, reject) {
+			if (typeof data === "function") {
+				// data is the callback
+				callback = data;
+			}
+			self.internal.createRole(server, data).then(function (role) {
+				callback(null, role);
+				resolve(role);
+			})["catch"](function (e) {
+				callback(e);
+				reject(e);
+			});
+		});
+	};
+
+	//def deleteRole
+
+	Client.prototype.deleteRole = function deleteRole(role) {
+		var callback = arguments.length <= 1 || arguments[1] === undefined ? function (err) {} : arguments[1];
+
+		var self = this;
+		return new Promise(function (resolve, reject) {
+
+			self.internal.deleteRole(role).then(function () {
+				callback();
+				resolve();
+			})["catch"](function (e) {
+				callback(e);
+				reject(e);
+			});
+		});
+	};
+
 	return Client;
 })(EventEmitter);