fix(searchbar): removing background on activation of searchbar buttons md
fix(searchbar): removing background on activation of searchbar buttons md

references #247

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