FIX Check travis-ci.com instead of travis-ci.org

[GuySartorelli]

fixes #19
travis-ci.org hasn't allowed new builds to run since June 15th 2021 so it doesn't make sense to check it anymore.

This change will require a valid travis-ci.com token in the TRAVIS_CI_TOKEN environment variable.

[GuySartorelli]

The test that's failing is due to a constant in the ScrutinizerCheck not having its visibility declared - it has nothing to do with this PR (see #21)

[Zerogiven]

You get anything back there? I also had to remove the isset file condition (// Not set up (404) comment)..

[robbieaverill]

Would you mind fixing the phpcs violation? I realise it's in a file that isn't touched by this PR, but it would be helpful

[GuySartorelli]

@robbieaverill The phpcs violation fix as well as other things which caused issues with the tests after I fixed the violation is all in #21

[GuySartorelli]

I no longer have access to the forked repository to rebase in order to get this green (the PHPCS is fixed in #21 which has been merged)
I can create a new PR if necessary but I think it's obvious the phpcs-related failure has nothing to do with this PR.