Fix examples id

id field doesn't support upper case character.

Signed-off-by: Chengwei Yang <yangchengwei@qiyi.com>
Merge pull request #409 from chengweiv5/master

Fix examples id
Add The Factory to list of Marathon users
Add go client
Merge pull request #415 from jbdalido/feature/goclient

Add go client to README
Merge pull request #414 from mbabineau/master

Add The Factory to list of Marathon users