Merge pull request #6 from shadowinek/master

Merging @shadowinek's composer.json for support of Packagist
Added option for delivering random images by direct HTTP call
Merge pull request #7 from keanpedersen/master

Preliminary support for dummy images by HTTP request...which makes it possible to call images from stylesheets.
Extra error handling for direct call
Fixed direct call to work with optional.htaccess
Merge pull request #8 from keanpedersen/master

Extra error handling for direct calls
Merge pull request #1 from kerns/master

Merging changes from kerns/dummy