we no longer send individual admin status msgs to redis

leave in code commented out as a reminder
redis connect method

remove some duplication in calls to it
remove some old TODOs
loop do is more clear than while true
comments to better explain scorepack threads

just trying to help out people looking at this code
use consistent form and variables for opening streams
extract sse_headers into a helper method

still need to call it manually in each class, but can now modify in one
place
move admin into own file
use inline blocks for connections.each

slightly less nesting in code for something simple
more commentary explaining each thread
extract connection pool provisioning into method
clean up README

move API documentation out (now in streamer-spec repo), fix some links
Merge pull request #1 from mroth/cleanfactor

Cleanup code as we work towards deprecation / canonicalization