chore: update README

README.md

@@ -1,3 +1,34 @@
 # busted-tl
 
-Add Teal capabilities to Busted 🧙
+Add Teal capabilities to Busted 🧙
+
+## Usage
+
+First busted-tl needs to be installed. The most easy way to install is to use Luarocks:
+
+```sh
+luarocks install busted-tl
+```
+
+(Note: `busted-tl` depends on `busted`, so it will automatically be installed by Luarocks if it is missing)
+
+Now, when running `busted` to allow the Teal loaders it must be specified with the `--loaders` flag:
+
+```sh
+busted --loaders=teal
+```
+
+When managing a project with Luarocks, it's easy to configure `busted-tl`:
+
+```lua
+test_dependencies = {
+   "busted-tl",
+}
+
+test = {
+   type = "busted",
+   flags = {
+      "--loaders=teal",
+   },
+}
+```