Merge pull request #3 from kevincai/master

rename plugins to lib, following latest puppet directory structure

manage aptrepo in single file /etc/apt/sources.list

Keeping in sync with version in puppet repo

Sync current version from puppet repository

Sync version from github.com/jbouse/puppet.git

Add newvalue validation to all properties

clean-up for target location

Remove string constants and use class variables

update README to reflect property name changes

clean up errors

work on ensurability

fix typo

add examples to README

clean-up default target construction