Added more links related to third party repo

Author: Jordan Hall

README.md

@@ -4,7 +4,7 @@ These scripts are designed to aid in the setup of and switching between multiple
 
 Currently they support switching between PHP 5.6 and PHP 7.0.
 
-Please note that these scripts install packages from a third-party repository, provided by Ondřej Surý. More details are available at [the repository's PPA page on Launchpad](https://launchpad.net/~ondrej/+archive/ubuntu/php/).
+Please note that these scripts install packages from a third-party repository, provided by [Ondřej Surý](https://twitter.com/oerdnj). More details are available at the repository's [website](https://deb.sury.org/), [PPA page on Launchpad](https://launchpad.net/~ondrej/+archive/ubuntu/php/) and [Twitter account](https://twitter.com/debsuryorg).
 
 ## Requirements