Added help option to pscss
Added help option to pscss

dleffler/scssphp,webdevid/scssphp,g105b/scssphp,webdevid/scssphp,leafo/scssphp,webdevid/scssphp,g105b/scssphp,dleffler/scssphp,leafo/scssphp,g105b/scssphp,guilhermeblanco/scssphp,dleffler/scssphp,guilhermeblanco/scssphp,leafo/scssphp,kkkyyy03/scssphp