first experimental release for x-eventpromo

X eventpromo (#193)

* initial bootstrap for eventpromo
 🐿 v2.10.2

* flesh out the component
 🐿 v2.10.2

* added knobs
 🐿 v2.10.2

* fixed tests, removed test css
 🐿 v2.10.2

* updated readme
 🐿 v2.10.2

* removed commented lines
 🐿 v2.10.2

* renamed vars, removed prefix
 🐿 v2.10.2

* fixes for Image.jsx
 🐿 v2.10.2

* updated snapshots
 🐿 v2.10.2

* updated readme, added usage and properties sections
 🐿 v2.10.2

* more minor changes to address PR comments
 🐿 v2.10.2

* use button element for play/pause button
 🐿 v2.10.2

* update knobs for eventpromo images
 🐿 v2.10.2

* added header for event-promo__details
 🐿 v2.10.2

* updated snapshots
 🐿 v2.10.2

* changed details-header
 🐿 v2.10.2

* updated snapshots
 🐿 v2.10.2

* styling images
 🐿 v2.10.2

* trying sass
 🐿 v2.10.2

* move styles to x-dash
 🐿 v2.10.2

* updated snapshots
 🐿 v2.10.2

* fixed formatting

* addressed some commments from PR

* replaced class+state pattern with x-interaction

* we dont want to use lock files for now, gitignore package-lock.json

* updated snapshot

* restored .bowerrc

* documented isPaused

* updated snapshots

* restore host param for x-workbench

* Use origami build service for base styles, use origami foundations directly

* Include o-normalise in build service provided document styles

* minor styles fixes, prettier

* rebase master, updated tests

* Reduces z-indices

* added strapline

* prettier styles

* fixed x-docs issue with o-grid