Start of a new configsource that uses argparse
Commandline now rewritten to use a argparse backend for actual parsing
oops
example typo
all tests now pass
HISTORY.rst update
doc update
tested implementation of a pyfile source
tested implementation of a etcd source
first attempt to get etcd tests to run on travis (but not appveyor)
second attempt
third attempt
fourth...
doh
it's python-etcd
install python-etcd in a separate step not through requirements.txt
doc updates
replaced python-etcd with requests
work
etcd test should work on an empty store