updating samples to use dynamic config
rearranging config map
adding PayPal image to samples
IPN readme update
IPN readme update
updated config method names, wiki links in README.md and Samples
added sandbox email address in Configuration.php
Merge pull request #8 from paypal/sampleupdate103-namespace

updating samples to use dynamic config
Update Configuration.php
updated version and CHANGELOG.md
Merge pull request #10 from paypal/rel-3.6.106

106 release