Remove redis store

Signed-off-by: chatgris <jboyer@af83.com>
Merge branch 'master' into redisless

Conflicts:
	lib/sponges/configuration.rb
Using each_with_object instead of inject

Signed-off-by: chatgris <jboyer@af83.com>
README and CHANGELOG

Signed-off-by: chatgris <jboyer@af83.com>
Merge branch 'master' into redisless