Merge pull request #1 from bitdeli-chef/master

Add a Bitdeli Badge to README

Author: cballou

README.md

@@ -15,3 +15,7 @@ php -f caching-iterator.php
 ````
 
 Which will produce example output in your console/terminal.
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+[![Bitdeli Badge](https://d2weczhvl823v0.cloudfront.net/cballou/php-spl-iterator-interface-examples/trend.png)](https://bitdeli.com/free "Bitdeli Badge")
+