Update gitignore (sorry)

electron/node_modules/tmp-promise/example-usage.js

@@ -0,0 +1,9 @@
+var tmp = require("./index.js");
+var Promise = require("bluebird"); // just for delay, this works with native promises
+// disposer
+tmp.withFile((path) => {
+	console.log("Created at path", path);
+	return Promise.delay(1000);
+}).then(() => {
+	console.log("File automatically disposed");
+});