updating readme for using dynamic config
sample update for using dynamic config
updating IPN readme
adding PayPal image to samples
IPN readme update
IPN readme update
updated config method names in samples and IPN-README.md
Added wiki page path to Configuration.php
updated wiki links in README.md and Samples
Merge pull request #12 from paypal/sampleupdate103

Sample update for using dynamic config
updated install script to fetch wildcard tag names
checking if the tag/branch exists before downloading
Update CHANGELOG.md
updated stubs, version and changelog for 103 release
removing core sdk class references  from samples
fixing missing urls
updating readme for using dynamic config
sample update for using dynamic config
updating IPN readme
adding Simple Samples