chore(release): Bump version to 4.0.2 [skip ci]

<a name="4.0.2"></a>
## [4.0.2](v4.0.1...v4.0.2) (2018-06-04)

### Bug Fixes

* Various fixes to Sticky component and its examples ([#245](#245)) ([457b040](457b040))

package.json

@@ -1,6 +1,6 @@
 {
   "name": "harmonium",
-  "version": "4.0.1",
+  "version": "4.0.2",
   "description": "An opinionated React component framework for teams that move fast.",
   "repository": {
     "type": "git",