fix #25
Merge pull request #31 from poupotte/feature/nginx

Change nginx version and configuration
Merge pull request #32 from poupotte/master

Comments
delete existing file with root
Merge branch 'master' of github.com:mycozycloud/cozy-setup
Fix some typos

I fixed a few typos and made the English a little clearer.
Merge pull request #34 from daviddoran/patch-1

Fix some typos
change update stack message
Merge branch 'master' of github.com:mycozycloud/cozy-setup
use test_box