How To Install Stable OpenStack Liberty/Juno/Kilo with Neutron and Swift in Ubuntu 15.04 14.04

1)

Clone
$git clone https://github.com/openstack-dev/devstack.git -b stable/liberty

2)

CD to cloned devstack directory

$cd devsack

3)

Create a file named "localrc" with following content.
 

##For neutron

disable_service n-net 

enable_service q-svc q-agt q-dhcp q-l3

##For swift

enable_service s-proxy s-object s-container s-account

4)

Run stack.sh and install openstack
$./stack.sh