add metadata_expire and include params
priorities plugin installation is now optional
Merge pull request #1 from aripringle/master

Make priorities plugin installation optional and add a couple of additional yumrepo parameters
small fix for backwards compatibility
add mod_pagespeed repo
add jenkins repo
add newrelic gpg key
add extrarepo support for a few more repos
Merge pull request #2 from aripringle/master

add a couple of repos with extrarepo support
merge from upstream
Merge pull request #3 from aripringle/master

merge from upstream
Merge pull request #52 from diablomedia/master

some repo updates/additions, add ability to disable the priorities plugin