Adding gosexy/redis (Go bindings for hiredis) to the list of clients.

Hello antirez,

Just a kind request to include my Go bindings for hiredis into the list of clients. This package uses the official C client as base and extends it with Go idioms, it also implements subscriptions using goroutines and channels.

Please note that I use a copy of the official hiredis repo (_hiredis directory) instead of a submodule and that's because the go installation command "go get" does not support cloning submodules (yet), once the tool supports submodule cloning or until I find a better alternative I'll discard the fork.

Best,

José Carlos.