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+Installing composer dependencies

+================================

+

+We use composer to install PHP dependencies. These are defined in the

+file composer.json, the current dependency metadata is in composer.lock.

+

+To fetch the dependencies:

+

+* Get composer.phar as described at

+  https://getcomposer.org/download/

+* run [path_to]/composer.phar install in the webroot.

+

+This will install all required dependencies to the directory vendor.

+The vendor directory is listed in .gitignore to avoid committing

+duplicates of upstream projects.