how to undo the cache when changing imports????

after changing some imports you have to be sure to do a `rm -rf tmp/cache`. It would be great if we could figure out how to fix this. Not sure how you would unless we perhaps did a hash of the config/initializers/hyperstack.rb file, and then used that hash to somehow invalidate the cache.

Meanwhile until there is a real fix, the installer generator should leave a bit fat comment in the file explaining that if you edit this file you should do a `rm -rf tmp/cache`

Like any documentation (install and todo tutorial for example) that mentions the initializer, should in **bold** explain that you need to do the `rm -rf tmp/cache` trick