Swaps the order `onInit` is executed before `update`

Fixes a issue that the `update()` method was executed before the
`onInit()` method.
Merge pull request #66 from andreruffert/swap-order-onInit-update

Swaps the order `onInit` is executed before `update`
Merge branch 'develop' into trigger-change-only-on-value-change

* develop:
  Swaps the order `onInit` is executed before `update`

Conflicts:
	dist/rangeslider.min.js