Setup Appraisal

extra/README.md

@@ -0,0 +1,19 @@
+# Development
+
+## Releases
+
+```sh
+# Update version.rb with the new version
+# Update the gemfiles:
+bin/appraisal
+```
+
+## Testing
+
+```sh
+# Running specs using a specific configuration:
+bin/appraisal rails60-activeadmin22 rspec
+# Using latest activeadmin version:
+bin/appraisal rails60-activeadmin rspec
+# See gemfiles for more configurations
+```