Add synopsis

README.md

@@ -29,6 +29,31 @@ Useful resources:
 
 - [The Buffrs Book](https://helsing-ai.github.io/buffrs)
 - [Crate Documentation](https://docs.rs/buffrs)
+- `buffrs help`
+
+## Synopsis
+
+```
+An opinionated protobuf package manager
+
+Usage: buffrs <COMMAND>
+
+Commands:
+  init       Initializes a buffrs setup
+  add        Adds dependencies to a manifest file
+  remove     Removes dependencies from a manifest file
+  publish    Packages and uploads this api to the registry
+  install    Installs dependencies
+  uninstall  Uninstalls dependencies
+  generate   Generate code from installed buffrs packages
+  login      Logs you in for a registry
+  logout     Logs you out from a registry
+  help       Print this message or the help of the given subcommand(s)
+
+Options:
+  -h, --help     Print help
+  -V, --version  Print version
+```
 
 ## Motivation