Merge branch 'stable'
Moving sdk_config.ini to samples folder and updating installation script / README.md
Update README.md
Updating installation instructions in README.md
Update composer.json
setting accesstoken using credential object
checking if the tag/branch exists before downloading
Merge pull request #3 from paypal/bugfix-thirdpartyaccess

setting accesstoken using credential object
Update CHANGELOG.md
updated stubs, version and changelog for 103 release
Merge pull request #4 from paypal/rel-2.4.103

Rel 2.4.103