Promote Picroft 20.08 to stable

Author: krisgesling

README.md

@@ -12,9 +12,9 @@ The entire project is available as a pre-built micro-SD image ready to be
 burned and placed into a Raspberry Pi. You can download the pre-built image
 here:
 
- [![Download img](./microsd-icon.png "Download img") Picroft Stable 2020-01-10 image](https://mycroft.ai/to/picroft-image)
+ [![Download img](./microsd-icon.png "Download img") Picroft Stable 2020-09-07 image](https://mycroft.ai/to/picroft-image)
 
-SHA-256: 9cd9ec16388d72dfc6069bc7ea62d1b73e944df103571f48c88a49ec09f5f6d4
+SHA-256: 3d3c99c53793224b84de02e816435230f2bbe6272b71d8909afee43e5ef9a402
 
 [![Download img](./microsd-icon.png "Download img") Picroft Unstable 2020-09-07 image](https://mycroft.ai/to/picroft-unstable)