Adding ping security group rule

Adding some more details to the README

Fixing EBS root volume size and instance init script param

Some hacks to setup the master and slave nodes and also install CM

Adding cfn template sample for us-east-1

Adding more to docs

Adding support for m1.xl instances, security group conf and fixing DNS

List_db call added

Fixing help and a bug in setup script

Basic support for spinning up RDS instances

Fixing bugs

Support for placement groups

Working script, cfn template for single subnet deployment and README

Initial examples. Source: Ben Spivey, Jean-Marc, Rahul Bhartia

Initial commit