message: Added one line in main README to invite developers to our weekly Indy calls. This is to help the developers who are working on agents to learn from others and lower the amount of separate people reinventing the wheel.
diff: @@ -16,6 +16,8 @@ If you have just started learning about self-sovereign identity, here are some r
  * This extended tutorial introduces Indy, explains how the whole ecosystem works, and how the
  functions in the SDK can be used to construct rich clients: [Indy-SDK Getting-Started Guide](doc/getting-started/getting-started.md)
  +* Hyperledger Indy Working Group calls happen every Thursday at 8amPT, 9amMT, 11amET, 4pmBST. Add to your calendar and join from any device: https://zoom.us/j/232861185
  +
  * A recent webinar explaining self-sovereign identity using Hyperledger Indy and Sovrin: [SSI Meetup Webinar](https://youtu.be/RllH91rcFdE?t=4m30s)
  * Visit the main resource for all things "Indy" to get acquainted with the code base, helpful resources, and up-to-date information: [Hyperledger Wiki-Indy](https://wiki.hyperledger.org/projects/indy).
  