λ composer require zk/getpic-for-laravel dev-master
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1

- The requested package zk/getpic-for-laravel could not be found in any version, there may be a typo in the package name.

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://getcomposer.org/doc/0... for more details.

Read https://getcomposer.org/doc/a... for further common problems.

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