Fixed IPAdress error message.
Make Watcher work for directories too
Merge pull request #255 from AlCutter/watch_dir

Make Watcher work for directories too
Catch invalid input early on in AsyncLogClient::GetEntries.
Moved apt-get python packages to pip (travis).
Merge branch 'master' into super_duper

Conflicts:
	.travis.yml
	cpp/client/async_log_client.cc
Add a libevent::Base::RunClosure() method.
DO NOT PUSH.