Update README.md

Correction to inspiration
Update README.md
Merge pull request #1 from jbouse/patch-1

Readme clarity
updates autosigner to fall back to using certname

previous behavior would fail if pp_instance_id wasn't set. Now if you
don't use csr_attributes.yaml file to extend the csr it will just use
certname to check.
fix typooes
uses el.repo files now
cleans up userdata script, adds two minute wait to allow for pe_mcollective classification
adds better error handling to classify
disable new hiera data stuff for now
default to demo env path
fxi topy