modify the home-page info with the developer documentation
modify the home-page info with the developer documentation

update home-page info

Change-Id: I8f163d48c572640712813fc279bdc1999f4f0ad1

yeming233/rally,gluke77/rally,gluke77/rally,gluke77/rally,openstack/rally,vganapath/rally,openstack/rally,vganapath/rally,vganapath/rally,yeming233/rally,openstack/rally,gluke77/rally,vganapath/rally,openstack/rally