composer/getcomposer.org — pull request #60 by pda (2014-02-10 13:23:21+00:00)
Title: installer supports --filename

In addition to the existing `--install-dir`, installer accepts `--filename`
which, for example, allows Composer to be installed as `composer` instead of
`composer.phar`.

Example:

curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer