Support laravel 5

[tbleckert]

Works without problem as it seems, just changed the version to 5.0.*

[tbleckert]

This fixes #17

[barryvdh]

Better change it to 4.*|5.0.* so you can support both versions.

[tbleckert]

Yeah that's true @barryvdh , thanks and it's now updated.

[vinkla]

This can be closed in favor of #22. Since it won't work when @laravel 5 is stable due to new way to publish package config.