Update installation instructions to use released Bundler version and …

…binstubs

README.md

@@ -12,23 +12,23 @@ Once you're done with your changes send a pull request. Thanks!
 Make sure you have Ruby and RubyGems installed. Next install
 [bundler](http://gembundler.com/):
 
-    gem install bundler --pre
+    gem install bundler
 
 Then install dependencies:
 
-    bundle install
+    bundle install --binstubs
 
 In order to run a local Web server that will serve documentation site, run:
 
-    bundle exec jekyll --server
+    ./bin/jekyll --server
 
 and then open [localhost:4000](http://localhost:4000/) in your browser. When you
 make changes to Markdown source files, HTML pages will be regenerated on every
 page reload.
 
 To regenerate the entire site, use
 
-    bundle exec jekyll
+    ./bin/jekyll --no-auto
 
 Note that quoted entities may be escaped or unescaped depending on the Ruby
 version (1.8 vs. 1.9) used. It is normal.