Added Laravel 6 Support (mpociot#112)

Update composer.json

Update composer.json (mpociot#84)

Update README

Changed isOwnerOfTeam to use $user->team() (mpociot#68)

* Checked isOwnerOfTeam to use ->team()

* Fixed isOwnerOfTeam return values

* Forgot to ->first() in isOwnerOfTeam()

Merge branch 'dlaynes-master'

Publish migration file - issue mpociot#59

Merge pull request mpociot#52 from BlueTeck/event

add UserInvitedToTeam event

Update README.md

Merge pull request mpociot#42 from mikemand/feature-events

Add events to attach/detach.