Cannot install through composer

[ssurenr]

When try to install through composer by executing this command, composer.phar require vendor/simplesamlphp-module-redis 1.*, I get the following error

./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 vendor/simplesamlphp-module-redis could not be found in any version, there may be a typo in the package name.

[ssurenr]

For people who come from non php world:
This is the command to execute:

composer.phar require colourbox/simplesamlphp-module-redis 0.*