message: minor adjustment to tet
diff: Botkit offers everything you need to design, build and operate an app:
  * Easy-to-extend starter kits
  -* Fully-featured developer SDK
  +* Fully-featured SDK with support for all major platforms
  * Content management and design tools (with [Botkit Studio](https://studio.botkit.ai))
  * Built-in analytics and CRM tools (with [Botkit Studio](https://studio.botkit.ai))
  * [Tons of plugins and middlewares](docs/readme-middlewares.md)
  