17 spin forumula test rebase

.gitignore

@@ -0,0 +1 @@
+steps_output.txt

Formula/bart.rb

@@ -28,6 +28,6 @@ def install
   end
 
   test do
-    assert_match "bart 0.9.0", shell_output("#{bin}/bart --version")
+    assert shell_output("#{bin}/bart --version").start_with?("bart #{version}")
   end
 end

Formula/spin.rb

@@ -40,6 +40,6 @@ def post_install
   end
 
   test do
-    system "#{bin}/spin", "--version"
+    assert shell_output("#{bin}/spin --version").start_with?("spin #{version}")
   end
 end

README.md

@@ -13,3 +13,12 @@
 ## Documentation
 
 `brew help`, `man brew` or check [Homebrew's documentation](https://docs.brew.sh).
+
+## Contributing
+
+Contributors are encouraged to run Homebrew's test-bot locally before submitting
+a pull request.
+
+```sh
+brew test-bot --only-tap-syntax
+```