Update Qt-Creator to 3.2.2

Hi,

a new Qt-Creator version is out, and I simply changed the version and hash according to [the download page](
http://download.qt-project.org/official_releases/qtcreator/3.2/3.2.2/qt-creator-opensource-mac-x86_64-3.2.2.dmg.mirrorlist).

Best regards,
  Fabian