add selectable activity sample (#1624)

* add selectable activity sample

closes #1117

* update changelog

* add a11y

* update readme

CHANGELOG.md

@@ -23,7 +23,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Added ability to style sendbox background and text color, thru `styleOptions.sendBoxBackground` and `styleOptions.sendBoxTextColor`, in PR [#1575](https://github.com/Microsoft/BotFramework-WebChat/pull/1575)
 - `core`: Added `sendEvent`, in PR [#1286](https://github.com/Microsoft/BotFramework-WebChat/pull/1286)
 - `core`: Added `CONNECT_FULFILLING` action to workaround `redux-saga` [design decision](https://github.com/redux-saga/redux-saga/issues/1651), in PR [#1286](https://github.com/Microsoft/BotFramework-WebChat/pull/1286)
-- Added missing Spanish (es-ES) locale by [@schgressive](https://github.com/schgressive) in PR [#1615](https://github.com/Microsoft/BotFramework-WebChat/pull/1615)
+- `component`: Added missing Spanish (es-ES) locale by [@schgressive](https://github.com/schgressive) in PR [#1615](https://github.com/Microsoft/BotFramework-WebChat/pull/1615)
+- `samples`: Added selectable chat activity sample, by [@a-b-r-o-w-n](https://github.com/a-b-r-o-w-n), in PR [#1624](https://github.com/Microsoft/BotFramework-WebChat/pull/1624)
 
 ### Changed
 - Moved `botAvatarImage` and `userAvatarImage` to `styleOptions.botAvatarImage` and `styleOptions.userAvatarImage` respectively, in PR [#1486](https://github.com/Microsoft/BotFramework-WebChat/pull/1486)

lerna.json

@@ -4,7 +4,8 @@
     "packages/*",
     "samples/12.customization-minimizable-web-chat",
     "samples/13.customization-speech-ui",
-    "samples/14.customization-piping-to-redux"
+    "samples/14.customization-piping-to-redux",
+    "samples/16.customization-selectable-activity"
   ],
   "version": "0.0.0"
 }