(#7506) Specify supported Ruby versions in README.md

The README was not specific enough about the current state of our Ruby support.
This commit lays out our current status as discussed in issue #7506 and in
greater detail on the internal mailing list around April 8, 2011 under the
subject "Statler Ruby Versions Support."

Paired-With: Matt Robinson <matt@puppetlabs.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/README.md b/README.md
index 4d17a752a..c3a6c9483 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ Puppet, an automated administrative engine for your Linux and Unix systems, perf
 administrative tasks (such as adding users, installing packages, and updating server
 configurations) based on a centralized specification.
 
-Documentation (and detailed installation instructions) can be found online at the 
+Documentation (and detailed installation instructions) can be found online at the
 [Puppet Docs site](http://docs.puppetlabs.com).
 
 Installation
@@ -13,7 +13,11 @@ Installation
 
 Generally, you need the following things installed:
 
-* Ruby >= 1.8.1 (earlier releases might work but probably not)
+* A supported Ruby version. Ruby 1.8.5, 1.8.7, and 1.9.2 are fully supported
+  (with a handful of known issues under 1.9.2); Ruby 1.8.1 is supported on a
+  best-effort basis for agent use only. Other versions of Ruby are used at your
+  own risk, and Ruby 1.8.6, 1.9.0, and 1.9.1 are not recommended for
+  compatibility reasons.
 
 * The Ruby OpenSSL library.  For some reason, this often isn't included
   in the main ruby distributions.  You can test for it by running