How to Add 'Invoice Ninja" in Laravel 5.1?

"composer require hillelcoren/invoice-ninja" is not working for me and giving the following error:

Your requirements could not be resolved to an installable set of packages.

Problem 1
- hillelcoren/invoice-ninja v2.4.5 requires laravel/framework 5.0.* -> no matching package found.
- hillelcoren/invoice-ninja v2.4.4 requires laravel/framework 5.0.* -> no matching package found.
- hillelcoren/invoice-ninja v2.4.3 requires laravel/framework 5.0.* -> no matching package found.
- hillelcoren/invoice-ninja v2.4.2 requires laravel/framework 5.0.* -> no matching package found.
- hillelcoren/invoice-ninja v2.4.1 requires laravel/framework 5.0.* -> no matching package found.
- hillelcoren/invoice-ninja v2.4.0 requires laravel/framework 5.0.* -> no matching package found.
- Installation request for hillelcoren/invoice-ninja ^2.4 -> satisfiable by hillelcoren/invoice-ninja[v2.4.0, v2.4.1, v2.4.2, v2.4.3, v2.4.4, v2.4.5].

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 <http://ift.tt/WBoeQv; for more details.

Read <http://ift.tt/1g1ylKI; for further common problems.

Installation failed, reverting ./composer.json to its original content.

Does it means that NinjaInvoice doesn't support the newr versions of Laravel? Please someone solve the issue.

via Chebli Mohamed