proper ignores and update deps

Former-commit-id: ae7cffd2ca042cb45667d4d3a3f04217d1e7c940

.gitignore

@@ -1 +1,2 @@
 /bin/
+node_modules/

etc/electron/package.json

@@ -1,6 +1,6 @@
 {
   "name": "draw.io",
-  "version": "6.2.4",
+  "version": "6.6.4",
   "description": "draw.io desktop",
   "main": "electron.js",
   "scripts": {
@@ -23,10 +23,10 @@
   },
   "homepage": "https://github.com/jgraph/draw.io",
   "dependencies": {
-    "electron-log": "^1.3.0",
-    "electron-updater": "^1.8.2"
+    "electron-log": "^2.2.6",
+    "electron-updater": "^1.16.0"
   },
   "devDependencies": {
-    "electron": "^1.6.2"
+    "electron": "^1.7.2"
   }
 }