Update composer.json

Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - awellis13/laravel-resque 1.2.2 requires chrisboulton/php-resque dev-master -> no matching package found.
    - awellis13/laravel-resque 1.2.1 requires chrisboulton/php-resque dev-master -> no matching package found.
    - awellis13/laravel-resque 1.2.0 requires php >=5.5.0 -> no matching package found.
    - Installation request for awellis13/laravel-resque 1.2.x -> satisfiable by awellis13/laravel-resque[1.2.0, 1.2.1, 1.2.2].

Potential causes:
 - A typo in the package name
 - The package is not available in a stable-enough version according to your minimum-stability setting
   see <https://groups.google.com/d/topic/composer-dev/_g3ASeIFlrc/discussion> for more details.

Read <http://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.