docs: more getting started help

docs/abra/hack.md

@@ -50,7 +50,7 @@ Then you can run the integration test suite with the following.
 ```
 export ABRA_TEST_DOMAIN="test.example.com"
 export ABRA_DIR="$HOME/.abra_test"
-bats -Tp tests/integration
+bats -Tp tests/integration # DO NOT run this just yet, read below...
 ```
 
 `ABRA_TEST_DOMAIN` should also have a DNS A record for `*.test.example.com`
@@ -59,6 +59,13 @@ It's advised that you re-use the same server and therefore the same Traefik
 deployment for running your integration tests. The test suite does not deploy
 Traefik for you. Then you'll have more stable results.
 
+You probably don't want to run the entire test suite though, it takes a while.
+Try the following for starters.
+
+```
+bats -Tp tests/integration/autocomplete.bats
+```
+
 ### Tagging tests
 
 When a test actually deploys something to a server, we tag it with the following:
@@ -78,6 +85,12 @@ for more.
 
 ### Filter tests
 
+You can run a specific file.
+
+```
+bats -Tp tests/integration/autocomplete.bats
+```
+
 You can filter on test names to run specific kinds of tests.
 
 ```