README.markdown in git_presenter-0.2.2 vs README.markdown in git_presenter-0.3.0

@@ -15,20 +15,23 @@
 Any and all feedback is welcome
 
 ## Pre-requisites
 
 * Git
-* Ruby version 1.9.2 or 1.9.3 or jruby in 1.9 mode (basically anything with 1.9 at the end)
+* Ruby version 1.9.2 or 1.9.3
 
+Note jruby is currently unsupported as there is a problem with posix-spawn and jruby
+
 ## Installation
 
 gem install git_presenter
 
 ## Usage
 
 * Commit to git as you develop your code.
 * When the code is ready use the "git-presenter init" command to initialise
 * Once it is initialised you can start the presentation with "git-presenter start"
+* Make more commits if need be and use "git-presenter update"
 * Then use the following command to navigate the presentation
 * next/n: move to next slide
 * back/b: move back a slide
 * end/e:  move to end of presentation
 * start/s: move to start of presentation