Symlink the install directory instead of the files

This way the script is installable to arbitrary locations
Fix path bug
Restructure: move statemachine to the top

Hopefully it's easier to digest if the high-level concept comes first
Extract variable - XENSERVER_PASSWORD
Extract variable
Extract variable
Add copyright
Correct timezone
Extract variables
Extract some variables, install to a nodepool dir
Fix typo
Do not hardwire the script's install location
Update readme
Update documentation
Merge pull request #31 from matelakat/nodepoolize

Nodepoolize