chore: update readme

README.md

@@ -1,5 +1,11 @@
 # Elk
 
-A Mastodon web client made with 💛.
+A nimble Mastodon web client made with 💛.
 
-> Very WIP.
+Elk is in early alpha, but it is already quite usable. We would love your feedback and contributions.
+
+Check out the [Open Issues](/issues) and jump in the action. Join the [Elk discord server](https://discord.gg/vAZSDU9J) to learn more and get involved!
+
+The client is deployed to [elk.zone](https://elk.zone), you can share screenshots on social media but avoid sharing this URL or the discord server until we open the repo.
+
+If you would like to contribute, until the repo is open, please create branches in the main repository and send a PR from there.