Changed the read me instructions
Changed the read me instructions

1) Fixed numbering and a typo
2) Added instructions to edit Ryu controller ip address

Change-Id: I0146e9b738a060c9e6f342373b3af327067507e7

FrankDuan/df_code,neoareslinux/dragonflow,no2key/dragonflow,FrankDuan/df_code,openstack/dragonflow,no2key/dragonflow,FrankDuan/df_code,openstack/dragonflow,neoareslinux/dragonflow,openstack/dragonflow