fix(checkbox): no activated state
fix(checkbox): no activated state

Closes #150

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