Add travis-ci support.
Improve tests: temp directory is created/deleted for tests.
Added travis-ci build status image.
Create GD objects with specific functions.
Functionl test: prepara skipping tests if GD is not installed.
Creation of new Imagine now goes in separate function.
Image class based on Gd is now separated.
In some environments, "application/x-font-ttf" is not defined (because it's not an official mime type).
Fix class name for ImageConfig tests.
Separating ImageConfig tests for GD.
Removing unused code in tests.
Separating Image tests for GD.
Separating ImageConfig's font point calculation to another class. This calculation depends on GD, not the rest of the tests.
Adding Imagick version form ImageFaker/Image and ImageTest.
Adding Imagick version for ImageConfig's font point tests.
Adding Gmagick version for tests.
Improve composer.json
Improve travis config (copy from Imagine's repo).
Instantiate Font objects using Imagine.
Improve Font instantiation (only specific Imagine object is necessary).