Merge branch 'stable'
Moving sdk_config.ini to samples folder and updating installation script / README.md
fixing composer.json & Updating installation instructions in README.md
Renaming CHANGELOG.txt to CHANGELOG.md
Update composer.json
setting thirdparty credential via credential object
updated install script to fetch wildcard tag names
checking if the tag/branch exists before downloading
Merge pull request #28 from paypal/bugfix-accesstoken103

Bugfix accesstoken103
Update CHANGELOG.md
updated stubs,version and changelog for 103 release
Merge pull request #29 from paypal/rel-2.4.103

Rel 2.4.103