Merge pull request puppetlabs#441 from apenney/postgis-you-are-the-weakest-link-goodbye

Remove postgis support for now.

Author: hunner

README.md

@@ -856,6 +856,11 @@ Current it is only actively tested with the following operating systems:
 
 Although patches are welcome for making it work with other OS distros, it is considered best effort.
 
+### Postgis support
+
+Postgis is currently considered an unsupported feature as it doesn't work on
+all platforms correctly.
+
 ### All versions of RHEL/Centos
 
 If you have selinux enabled you must add any custom ports you use to the postgresql_port_t context.  You can do this as follows: