just some edits to coding style, and added "use strict" for linty freshness.
just some edits to coding style, and added "use strict" for linty freshness.

alejonext/matchMedia.js,AndBicScadMedia/matchMedia.js,ababic/matchMedia.js,therealedsheenan/matchMedia.js,dirajkumar/matchMedia.js,AndBicScadMedia/matchMedia.js,CondeNast/matchMedia.js,amitabhaghosh197/matchMedia.js,zxfjessica/match-media-polyfill,ababic/matchMedia.js,paulirish/matchMedia.js,paulirish/matchMedia.js,amitabhaghosh197/matchMedia.js,therealedsheenan/matchMedia.js,CondeNast/matchMedia.js,alejonext/matchMedia.js,dirajkumar/matchMedia.js,zxfjessica/match-media-polyfill