Add PHP 5.6 to travis.
Switch to PSR-4.
Merge pull request #5 from nubs/master

PHP 5.6 and PSR-4
Update PHPUnit to 4.1.
Add testsuite configuration.

This enables phpunit to be run without specifying the test suite
directory on the CLI.
Enable strict code coverage.
Access PHPUnit as a library for gathering report.

See dominionenterprises/util-php#32 and dominionenterprises/util-php#33.
Merge pull request #6 from nubs/master

Use PHPUnit strict coverage and gather coverage statistics using library interface.
Use phpcs as a library.
Use the full path to the code coverage.
Remove --dev from composer install.

--dev is the default.
Merge pull request #7 from nubs/master

Use phpcs as a library.
Remove clover.xml from the gitignore.

We no longer use the clover report for code coverage validation.
Only try to remove temp files if directory exists.

`glob()` returns false if the directory doesn't exist which causes
warnings when running this.  We only need to run it if the directory
exists.
Add a docker/fig based build.
Merge pull request #8 from nubs/master

Add a docker/fig based build.