Release/0.8.2 (#59)

* add custom speech docs

* add support for speech api

* minor updates

* minor docs tweak

* custom speech docs

markdown/docs/speech-api/overview.md

@@ -0,0 +1,17 @@
+# Custom speech API
+> Added in 0.8.2
+
+jambonz natively supports a large number of [STT](/docs/webhooks/recognizer) and [TTS](/docs/webhooks/say) speech providers out of the box, but if you want to use a speech provider that we don't support: no propblem! You can also add support for new speech vendors using our Speech APIs:
+
+- [custom STT API](/docs/supporting-articles/custom-speech-stt) (websocket-based)
+- [custom TTS API](/docs/supporting-articles/custom-speech-tts) (http-based)
+
+Adding support for a new STT or TTS vendor requires you to implement a server process that implements our APIs as described above, and integrates on the other side with your chosen vendor.  Check out [this example code](https://github.com/jambonz/custom-speech-example) which shows how to integrate [AssemblyAI](https://www.assemblyai.com/) as custom STT vendor, among others.
+
+Once you have added support for a new vendor, you can start using it immediately by logging into the jambonz portal and adding a new Speech service for that vendor.  You will specify the URL(s) that your server exposes as well as an api key that you create to secure the endpoint:
+
+![Creating custom STT vendor](/images/creating-custom-stt-vendor.png)
+
+Then, in the Application view simply select your custom vendor:
+
+![Selecting custom speech vendor](/images/using-custom-speech.png)