README in gecoder-0.7.1 vs README in gecoder-0.8.0

- old
+ new
@@ -11,17 +11,26 @@
 Gecode/R in production-code yet, it's merely available at this point to allow 
 people to play with it and give feedback.
 
 == Installation
 
-Gecode/R requires Gecode 1.3.1, which can be downloaded from 
+Gecode/R requires Gecode 2.1.1, which can be downloaded from 
 http://www.gecode.org/download.html . See 
 http://www.gecode.org/gecode-doc-latest/PageComp.html for the installation
 instructions.
 
 === Installing from gem
 
+There are two gems. The first includes only Gecode/R, and assumes that you have
+installed Gecode yourself. The second includes both Gecode/R and Gecode. If you 
+use Windows then you're recommended to use the second one, even though you 
+already have Gecode, as the other one does not come in a pre-compiled variant.
+
+Gecode/R only:
   gem install gecoder
+  
+Gecode/R and Gecode:
+  gem install gecoder-with-gecode
 
 === Installing from source using gem
 
   rake gem
   gem install pkg/gecoder-0.x.x.gem