Add more info in the README

README.md

@@ -1,5 +1,7 @@
 # Plume
 
+Federated blogging engine, based on ActivityPub.
+
 ## Setup the database
 
 You'll need Postgres.
@@ -16,3 +18,24 @@ GRANT ALL PRIVILEGES ON DATABASE plume to plume;
 
 exit
 ```
+
+Then run the migrations
+
+```
+diesel migrations run # Install diesel with `cargo install diesel_cli` if needed
+```
+
+You should repeat this operation every time the database schema has been modified.
+A good practice is to run it after every `git pull`.
+
+## Starting the app
+
+Just use:
+
+```
+cargo run
+```
+
+You'll need Rust nightly.
+
+Once the app started, try to visit [localhost:8000](http://localhost:8000).