added simple config for websocket client

etc/websocket-client.conf

@@ -0,0 +1,43 @@
+/** Example configuration file for VILLASnode.
+ *
+ * The syntax of this file is similar to JSON.
+ * A detailed description of the format can be found here:
+ *   http://www.hyperrealm.com/libconfig/libconfig_manual.html#Configuration-Files
+ *
+ * @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
+ * @copyright 2018, Institute for Automation of Complex Power Systems, EONERC
+ * @license GNU General Public License (version 3)
+ *
+ * VILLASnode
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *********************************************************************************/
+
+http = {
+	enabled = false
+}
+
+nodes = {
+	ws = {
+		type = "websocket",
+
+		hooks = (
+			{ type = "stats" }
+		)
+
+		destinations = [
+			"http://localhost:8088/test_session"
+		]
+	}
+};