This reverts commit 3ac8cb7. Oops. I meant to take this out after adding the development dependencies. I still don't think it would be a bad idea to remove the template-engine specific tests from Sinatra, but I think we should do it across all engines, not just erubis.
Enabling the reload_templates setting causes template files to be reread from disk and recompiled on each request. It's disabled by default in all environments except for development.