add demo page
Merge pull request #1122 from bem/issues/1066@v2

add demo page
islands theme: Implement new _focused* state for controls (close #1109)
Updated gemini screens
Merge pull request #1115 from bem/issues/1109@v2

islands theme: Implement new _focused* state for controls
 radio-group, checkbox-group, select: Specify value via  field in BEMJSON #1055