Do not ignore vendor/psr/cache
Adds PSR-6 Cache draft interfaces.
Merge branch 'master' into feature/PsrCache

Conflicts:
	.gitignore
Initial implementation...
Merge branch 'master' into feature/PsrCache
Updated the Psr/Cache interfaces in vendor.
Change of directory structure.
Added Psr-Cache Factory
PSR-Cache
PSR-Cache
Merge branch 'feature/PsrCache' into develop
Updated Composer.json
Added PSR-Cache
Updated Readme.
Merge branch 'release/1.2.0'