Update README.md
Corrected broken link to Vagrant-Proxyconf
DS-2095 pegging librarian-puppet to version 1.0.3
Merge pull request #24 from hardyoyo/DS-2095

DS-2095 pegging librarian-puppet to version 1.0.3
Merge pull request #22 from royopa/patch-1

Corrected broken link to Vagrant-Proxyconf
Corrected broken link to vagrant-vbox-snapshot
Merge pull request #25 from royopa/patch-3

Corrected broken link to vagrant-vbox-snapshot