Projector will use multiple connection.

Refactored code into
meta.go   - contains logic to gather index meta data.
upr.go    - opening and closing feed for a single bucket.
worker.go - per bucket loop that will listen for mutations and marshall them
            to index

woker will use multiple connection, configurable using -nconn command line
parameter, to push mutations to single index backend.

In a nutshell, each bucket can have multiple indexes, and each index can have
multiple connection.