fix(item-group-title): no content required
fix(item-group-title): no content required

driftyco/ionic,TillaTheHun0/ionic,jhlee8804/ionic,AbraaoAlves/ionic,dennybiasiolli/ionic,janglednerves/ionic,jhlee8804/ionic,driftyco/ionic,janglednerves/ionic,TillaTheHun0/ionic,alan-agius4/ionic,dennybiasiolli/ionic,joshesp/ionic,cambronjay/ionic,cambronjay/ionic,jhlee8804/ionic,cambronjay/ionic,joshesp/ionic,dennybiasiolli/ionic,jarrodkoch/ionic,alan-agius4/ionic,alan-agius4/ionic,alan-agius4/ionic,AbraaoAlves/ionic,manucorporat/ionic,joshesp/ionic,brianespinosa/ionic2-sass,jarrodkoch/ionic,cambronjay/ionic,manucorporat/ionic,AbraaoAlves/ionic,AbraaoAlves/ionic,janglednerves/ionic,driftyco/ionic,dennybiasiolli/ionic,manucorporat/ionic,alan-agius4/ionic,jarrodkoch/ionic,driftyco/ionic,manucorporat/ionic,jarrodkoch/ionic,janglednerves/ionic,joshesp/ionic,cambronjay/ionic,AbraaoAlves/ionic,jarrodkoch/ionic,TillaTheHun0/ionic,jhlee8804/ionic,manucorporat/ionic,driftyco/ionic,alan-agius4/ionic,janglednerves/ionic,TillaTheHun0/ionic,dennybiasiolli/ionic,jhlee8804/ionic