updating samples to use dynamic config
rearranging config map
adding PayPal image to samples
IPN readme update
updated config method names in samples and IPN-README.md
updated wiki links in README.md and Configuration.php
Merge pull request #13 from paypal/sampleupdate103-namespace

updating samples to use dynamic config
Update Configuration.php
Update IPN-README.md
updated stubs, version and CHANGELOG.md
Merge pull request #18 from paypal/rel-3.6.106

106 release