README Refresh (#599)
README Refresh (#599)

* Readme refresh [skip ci]

* readme feeback [skip ci]

* initial styling and theme section [skip ci]

* changing styling and theming section [skip ci]

* updated words for theming [skip ci]

* Address some review feedback [skip ci]

edhager/widget-core,edhager/widget-core,edhager/widget-core,edhager/widget-core