chore: use more @types

Author: KnisterPeter

package.json

@@ -35,8 +35,12 @@
   },
   "license": "MIT",
   "devDependencies": {
+    "@types/chai": "3.4.34",
     "@types/chalk": "0.4.31",
     "@types/diff": "0.0.31",
+    "@types/mocha": "2.2.32",
+    "@types/node": "6.0.46",
+    "@types/react": "0.14.44",
     "babel-core": "6.18.2",
     "babel-preset-es2015": "6.18.0",
     "babel-register": "6.18.0",