use elasticsearch to store the sequence (<argv.index>/config/sequence)
DRY up the sequence url
make test es listen on a different port and not connect to cluster
better failure handling
test the storing of last sequence in es
bump 0.2.0
add a bit more context to errors in the log
upddate npm-normalize (0.1.2) and bump (0.2.1)
only pause when necessary

Avoids crash in follow module.  See:
https://github.com/iriscouch/follow/issues/13#issuecomment-16339171
for more details.