no more websocket calls in automation

lib/ghobs.js

@@ -97,6 +97,17 @@ function GHOBS(config) {
   	return this.websocket.setSceneItemProperties({"item": item, "scene-name": scene, "visible": visible});
   };
 
+  this.toggleVisible(item) => {
+  	return new Promise((resolve, reject) => {
+	  	this.websocket.getSceneItemProperties({"item": item})
+	      .then(data => {
+	        let newVisibility = !data.visible;
+	        this.websocket.setSceneItemProperties({"item": item, "visible": newVisibility}).then(resolve);
+	      })
+	      .catch(reject);
+  	});
+  }
+
   this.show = (item, scene) => {
   	return this.setVisible(item, scene, true);
   };
@@ -104,6 +115,16 @@ function GHOBS(config) {
   this.hide = (item, scene) => {
   	return this.setVisible(item, scene, false);
   };
+
+  this.switchToScene(scene) => {
+  	return new Promise((resolve, reject) => {
+	  	if (this.currentScene === scene) {
+	  		resolve(true);
+	  	}
+
+			this.websocket.setCurrentScene({"scene-name": scene}).then(resolve).catch(reject);
+  	});
+  };
 };
 
 module.exports = GHOBS;