Linkify logplexc in README

Signed-off-by: Daniel Farina <daniel@fdr.io>
Fix bitrot in README about go build

For a long time the Makefile has been the preferred way to build
pg_logplexcollector by way of mangling GOPATH.

Signed-off-by: Daniel Farina <daniel@fdr.io>
Pick up pg_logfebe update

v1.2, a version that fixes a file descriptor leak.

Signed-off-by: Daniel Farina <daniel@fdr.io>
Un-bitrot serve_db test

Bitrotted from the name field added to the serve struct.  These
records should probably support a dynamic data structure for all the
not-strictly-required stuff.  As-is this was an expeditious hack to
support something similar to Heroku's rendering of colors (which are
used to identify databases on one application) in the log output.

Signed-off-by: Daniel Farina <daniel@fdr.io>