Changed travis-ci build status link
Whitespace cleanup
Fixed matchspec miss and added retry logic w/ ets

In prior commit, missed switch of matchspec to work
with deletes, fixed here.

Added retry logic for race conditions around lb and
conn both trying to update same record at the same time.
If more than max is experienced, just let it go, things
will probably be ok.
Removed duplicate documentation
Added basic test for show_dest_status