README.md in gogetit-0.2.1 vs README.md in gogetit-0.3.0

- old
+ new

@@ -7,10 +7,16 @@
 - Provides an API and a CLI tool for dealing with Libvirt(KVM) and LXD.
 - Aware of MAAS and works with [maas-client](https://github.com/itisnotdone/maas-client) to manage IP and FQDN allocation.
 - Aware of Chef knife and its sub commands such as Vault to automate routine tasks.
 - Being used by [kitchen-gogetkitchen](https://github.com/itisnotdone/kitchen-gogetkitchen) as a driver for Chef Test Kitchen.
 
+## Limitations
+- Network resource awareness is only provided by MAAS.
+- Only LXD and Libvirt(KVM) are available as provider.
+- Only IPv4 is available for IP assignment.
+- It is tested only on Ubuntu 16.04 with OVS as virtual switch.
+
 ## Installation
 
 ### dependent packages
 ```bash
 sudo apt install -y build-essential lxd-client libvirt-dev libvirt-bin
@@ -29,29 +35,54 @@
 $ gem install gogetit --no-ri --no-rdoc
 ```
 ## Usage
 ```bash
 gogetit list
-gogetit create lxd lxd01
-gogetit create libvirt kvm01
+gogetit create lxd01
+gogetit create lxd01 --provider lxd
 
+# For advanced network configuration
+gogetit create lxd01 -p lxd -i 192.168.0.10
+
+# When specifying multiple IPs, the first one will be chosen as gateway.
+# And the IP which belongs to the gateway interface will be the IP of the FQDN
+# of the container which is set by MAAS.
+# The IPs should belong to networks defined and recognized by MAAS.
+gogetit create lxd01 -p lxd -i 192.168.10.10 10.0.0.2
+
+# When specifying multiple VLANs, the first one will be chosen as gateway.
+# gogetit create lxd01 -p lxd -v 0 10 12
+# gogetit create lxd01 -p lxd -v 10 11
+
+gogetit create kvm01 -p libvirt
+gogetit create kvm01 -p libvirt -i 192.168.10.10 10.0.0.2
+
+# to provision with a bare metal machine
+# gogetit create kvm01 -p bare
+
 gogetit destroy lxd01
 gogetit rebuild kvm01
 
 # to create a container bootstrapping as a chef node
-gogetit create --chef chef01
+gogetit create chef01 --chef
 
+or
+
+CHEF=true gogetit create chef01
+
+
 # to destroy a container deleting corresponding chef node and client
-gogetit destroy --chef chef01
+gogetit destroy chef01 --chef
 ```
 
 ```ruby
 require 'gogetit'
 ```
 
 ## TODO
-- Network subnets and space aware via MAAS
-- Static IP allocation
+- Provisioning LXD with useful cloud-init user-data.
+- Deploying bare metal machine from machine pool.
+- Static IP auto-assignment with VLAN info.
 
 ## Development and Contributing
 Clone and then execute followings:
 
     $ cd gogetit