Adds example output

Author: djonas-noip

README.md

@@ -11,3 +11,26 @@ composer update
 # don't commit yet!
 composer-lock-diff
 ```
+
+Example Output
+==============
+
+```
+production packages
+===================
+predis/predis            dev-master => v1.1.1
+nikic/php-parser         v2.0.0     => v2.1.1
+paragonie/random_compat  1.1.4      => v1.4.1
+psr/log                  1.0.0      => 1.0.1
+sentry/sentry            0.22.0     => 1.4.1
+
+dev packages
+============
+behat/mink-selenium2-driver  v1.3.0    => v1.3.1
+symfony/yaml                 v2.8.1    => v3.1.4
+doctrine/dbal                v2.5.3    => v2.5.5
+behat/gherkin                v4.4.1    => v4.4.4
+phpspec/phpspec              2.4.0     => 2.5.3
+henrikbjorn/lurker           1.0.0     => dev-master
+mockery/mockery              0.9.4     => 0.9.5
+```