Add explode to checkRestrictedGrant in PDO Storage
Merge branch 'develop' of https://github.com/bshaffer/oauth2-server-php into issue-200
Add test for storage check restricted grant type
Add unit testing and apply fix to checkRestricted method of Redis storage
Merge pull request #202 from Rockstar04/issue-200

Add explode to checkRestrictedGrant in PDO Storage