[yum] redhat runs `yum clean all` prior to doing anything, moved bunchr install to function
Merge pull request #24 from portertech/yum

Redhat runs `yum clean all` prior to doing anything
Merge pull request #25 from portertech/init

[init] utilize /etc/default/sensu, use a master service script
Merge pull request #26 from portertech/init

[init] need to put sensu-service in place
[windows] use a newer rubyinstaller devkit release
Merge pull request #27 from portertech/windows

[windows] use a newer rubyinstaller devkit release
[init] set_sensu_path() after system specific PATH