update electron to 1.4.2, update packages, remove unused packages

package.json

@@ -1,13 +1,13 @@
 {
   "name": "MdEditor",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "description": "Simple markdown editor",
   "main": "main.js",
   "scripts": {
     "prestart": "webpack",
     "start": "electron main.js",
     "prebuild": "webpack",
-    "build": "electron-packager ./ --platform=darwin,linux --overwrite --ignore=bower_components --ignore=src --ignore=node_modules/electron-packager --ignore=node_modules/electron-prebuilt --ignore=node_modules/webpack --ignore=node_modules/extract-text-webpack-plugin --ignore=node_modules/style-loader --icon=./app/images/icon --arch=x64 --version=1.4.0"
+    "build": "electron-packager ./ --platform=darwin,linux --overwrite --ignore=bower_components --ignore=src --ignore=node_modules/electron-packager --ignore=node_modules/electron-prebuilt --ignore=node_modules/webpack --ignore=node_modules/extract-text-webpack-plugin --ignore=node_modules/style-loader --icon=./app/images/icon --arch=x64 --version=1.4.2"
   },
   "repository": {
     "type": "git",
@@ -16,16 +16,15 @@
   "author": "Damian Baćkowski",
   "license": "MIT",
   "devDependencies": {
-    "codemirror": "^5.14.2",
+    "codemirror": "^5.19.0",
     "css-loader": "^0.25.0",
-    "electron-packager": "8.0.0",
-    "electron-prebuilt": "1.4.0",
+    "electron-packager": "8.1.0",
+    "electron": "1.4.2",
     "extract-text-webpack-plugin": "^1.0.1",
-    "highlight.js": "^9.3.0",
+    "highlight.js": "^9.7.0",
     "json-loader": "^0.5.4",
-    "jspdf": "^1.2.61",
     "markdown-it": "^8.0.0",
     "style-loader": "^0.13.1",
-    "webpack": "^1.13.1"
+    "webpack": "^1.13.2"
   }
 }