Upgrading version to 2.2.3-dev
Added the outside triggerElement, but no implementation yet.
The shadow isn't clickable anymore now.

Fixes #25
Corrected the link to the CONTRIBUTING section.
Fixed the native adapter for IE
Added minimal downloads and added the polyfills for IE for the native adapter.
Added correct version information to the files.
Upgrading version to 2.2.3 (Fixed the native adapter for IE8+)
Merge tag 'v2.2.3'

Fixed the native adapter for IE8+