->setDescription('Adds required packages to your composer.json and installs them')
->setDescription('Adds required packages to your composer.json and installs them.')
->setDefinition(array(
newInputArgument('packages',InputArgument::IS_ARRAY|InputArgument::OPTIONAL,'Required package name optionally including a version constraint, e.g. foo/bar or foo/bar:1.0.0 or foo/bar=1.0.0 or "foo/bar 1.0.0"'),
newInputOption('dev',null,InputOption::VALUE_NONE,'Add requirement to require-dev.'),