Update supported versions in README.md

Author: za-arthur

README.md

@@ -3,12 +3,12 @@
 `pg_probackup` is a utility to manage backup and recovery of PostgreSQL database clusters. It is designed to perform periodic backups of the PostgreSQL instance that enable you to restore the server in case of a failure.
 
 The utility is compatible with:
-* PostgreSQL 9.5, 9.6, 10;
+* PostgreSQL 9.5, 9.6, 10, 11;
 
 `PTRACK` backup support provided via following options:
 * vanilla PostgreSQL compiled with ptrack patch. Currently there are patches for [PostgreSQL 9.6](https://gist.githubusercontent.com/gsmol/5b615c971dfd461c76ef41a118ff4d97/raw/e471251983f14e980041f43bea7709b8246f4178/ptrack_9.6.6_v1.5.patch) and [PostgreSQL 10](https://gist.githubusercontent.com/gsmol/be8ee2a132b88463821021fd910d960e/raw/de24f9499f4f314a4a3e5fae5ed4edb945964df8/ptrack_10.1_v1.5.patch)
-* Postgres Pro Standard 9.5, 9.6
-* Postgres Pro Enterprise
+* Postgres Pro Standard 9.5, 9.6, 10
+* Postgres Pro Enterprise 9.5, 9.6, 10
 
 As compared to other backup solutions, `pg_probackup` offers the following benefits that can help you implement different backup strategies and deal with large amounts of data:
 * Choosing between full and page-level incremental backups to speed up backup and recovery
@@ -97,4 +97,4 @@ Postgres Professional, Moscow, Russia.
 
 ## Credits
 
-`pg_probackup` utility is based on `pg_arman`, that was originally written by NTT and then developed and maintained by Michael Paquier.
+`pg_probackup` utility is based on `pg_arman`, that was originally written by NTT and then developed and maintained by Michael Paquier.