Initial commit
Initial playbook and roles definition
Add README
Add tasks for setting up yum & install packages
Setup YUM proxy
Setup proxy
Edit the file in one task
Create Hadoop user and group
Setup authorized_keys
Create directories
Setup nfs
Setup EPEL repository
Install Java
Update README, add license
Add license file
Update README
Remove user from playbook.

This make the playbook more reusable since
defaults to logged in user.
Update README
Unzip Hadoop
Configure Hadoop HDFS and env