Hello Lerna

Initialise lerna with independent versioning.

```shell
npm install --save-dev lerna
npx lerna init --independent
```

lerna.json

@@ -0,0 +1,7 @@
+{
+  "lerna": "2.11.0",
+  "packages": [
+    "packages/*"
+  ],
+  "version": "independent"
+}

package.json

@@ -82,6 +82,7 @@
     "isomorphic-fetch": "2.2.1",
     "jest": "^22.0.6",
     "json3": "^3.3.2",
+    "lerna": "^2.11.0",
     "lint-staged": "^6.0.0",
     "minify-stream": "^1.1.0",
     "mkdirp": "0.5.1",