Fixed caching code previously commited

Fixed cache clear on role and perms table operations.

Added laravel 5.5 support for auto discover

Added default exipre time 24 hours for cache

Merge pull request #31 from jyhsu2000/master

Fix roles relation of Permission

Cache was missing

Merge pull request #18 from ZhernakovVladimir/feature

loading Permission_role foreign key name from config profile

fixes role profile variable issue (#9)

* use static role profile instead of keeping two different properties for doing the same thing.

* update readme

Fix static variable

static variable access bug fix for all traits