Replacing 'update' command with something more useful.
'eg update' now actually fetches properly

* Fixes the fetch part of the update command, which was broken
* Minor output cleanup to make 'eg update' friendlier.
Merge pull request #1 from roblg/update-command

Replacing 'eg update' with something more reasonable.
Add --delete flag to push
stash: allow other flags with implicit save