update readme + links to more example applications

Author: drnic

README.md

@@ -3,28 +3,18 @@ CloudFoundry UAA OmniAuth Strategy
 
 OmniAuth strategy for authenticating users using the CloudFoundry UAA server.
 
-Set up a local ruby environment (so sudo not required):
+Add the following to your `Gemfile`:
 
-    $ rvm use 1.9.2
+```text
+gem 'omniauth-uaa-oauth2'
+```
 
-or
+For example usage see:
 
-    $ rbenv global 1.9.2-p180
+* the `examples/config.ru` sample code
+* https://github.com/starkandwayne/ultimate-guide-to-uaa-examples/tree/master/ruby/omniauth-login-only
+* https://github.com/starkandwayne/ultimate-guide-to-uaa-examples/tree/master/ruby/omniauth-login-and-uaa-api-calls
+* https://github.com/starkandwayne/ultimate-guide-to-uaa-examples/tree/master/ruby/resource-server-wrapper-ui
 
-see: https://rvm.io/ or http://rbenv.org/
-
-Build and install the cf-uaa-lib gem located at https://github.com/cloudfoundry/cf-uaa-lib
-
-Build the gem
-
-      $ bundle install
-      $ bundle exec gem build omniauth-uaa-oauth2.gemspec
-
-Install it
-
-      $ gem install omniauth-uaa-oauth2-*.gem
-
-
-See the examples folder for details on how to use it.
 
 Warning: Unlike the omniauth-oauth2 gem, this gem does not support the oauth2 'state' security parameter.