Update dependencies to enable Greenkeeper 🌴 (#34)

* chore(package): update dependencies

* docs(readme): add Greenkeeper badge

README.md

@@ -3,7 +3,7 @@
 [![Current Version](https://vsmarketplacebadge.apphb.com/version/bengreenier.vscode-node-readme.svg)](https://marketplace.visualstudio.com/items?itemName=bengreenier.vscode-node-readme)
 [![Install Count](https://vsmarketplacebadge.apphb.com/installs/bengreenier.vscode-node-readme.svg)](https://marketplace.visualstudio.com/items?itemName=bengreenier.vscode-node-readme)
 [![Open Issues](https://vsmarketplacebadge.apphb.com/rating/bengreenier.vscode-node-readme.svg)](https://marketplace.visualstudio.com/items?itemName=bengreenier.vscode-node-readme)
-[![Build Status](https://travis-ci.org/bengreenier/vscode-node-readme.svg?branch=master)](https://travis-ci.org/bengreenier/vscode-node-readme)
+[![Build Status](https://travis-ci.org/bengreenier/vscode-node-readme.svg?branch=master)](https://travis-ci.org/bengreenier/vscode-node-readme) [![Greenkeeper badge](https://badges.greenkeeper.io/bengreenier/vscode-node-readme.svg)](https://greenkeeper.io/)
 
 A [vscode](https://code.visualstudio.com) extension to view javascript module documentation __in editor__. 📝 💻
 

package.json

@@ -78,8 +78,8 @@
     "test": "npm run compile && node ./node_modules/copy/bin/cli.js \"src/test/testdata/**\" \"out/test/testdata\" && node ./node_modules/vscode/bin/test"
   },
   "devDependencies": {
-    "@types/mocha": "^2.2.42",
-    "@types/node": "^7.0.43",
+    "@types/mocha": "^5.2.4",
+    "@types/node": "^10.5.2",
     "copy": "^0.3.1",
     "typescript": "^2.6.1",
     "vscode": "^1.1.6",