Fix 'Quick Installation Guide'
Fix 'Quick Installation Guide'

Installation stops at './s2aio.sh 1' with 'Quick Installation Guide'.
Because 's2aio.sh' needs argument of either 'jenkins' or 'dev' now.

This commit changes './s2aio.sh 1' to './s2aio.sh dev'.

Change-Id: I709e5d87c89b72e67f985407720fa9965ff978ee
Closes-Bug: #1616267

openstack/storlets,openstack/storlets,openstack/storlets,openstack/storlets