added sort of hacky singleton and gem_exists? methods.  definitely needs to be ripped out into separate stores
gems from mirror/in memory/in redis will have .gem at the end.  however, this should be removed when saving to a file
minitest actually talks to test redis now
Version bump to 0.0.0
created gemspec with jeweler
use connection pooling
pull YankBank::GemSet out into module/class
Merge branch 'master' into command