FIX: BannerView permanently hidden after showAd(false) on IOS #67
FIX: BannerView permanently hidden after showAd(false) on IOS #67

Re-enable check for hidden bannerView.

Testing:
  IOS7 on iPhone5
  IOS7 on iPad3
  IOS6 on iPhone 3GS

erperejildo/cordova-plugin-admob,Jeremy017/cordova-plugin-admob,sangwonl/cordova-plugin-admob,floatinghotpot/cordova-plugin-admob,M4E/cordova-plugin-admob,erperejildo/cordova-plugin-admob,johnwerd/wallpapers,myiwan08/latihan,Icenium/cordova-plugin-admob,M4E/cordova-plugin-admob,Icenium/cordova-plugin-admob,agamemnus/cordova-plugin-admob,Icenium/cordova-plugin-admob,johnwerd/wallpapers,johnwerd/wallpapers,sangwonl/cordova-plugin-admob,floatinghotpot/cordova-plugin-admob,floatinghotpot/cordova-plugin-admob,Icenium/cordova-plugin-admob,Telerik-Verified-Plugins/AdMob,M4E/cordova-plugin-admob,erperejildo/cordova-plugin-admob,Telerik-Verified-Plugins/AdMob,Telerik-Verified-Plugins/AdMob,sangwonl/cordova-plugin-admob,Telerik-Verified-Plugins/AdMob,myiwan08/latihan,agamemnus/cordova-plugin-admob,Jeremy017/cordova-plugin-admob,johnwerd/wallpapers,erperejildo/cordova-plugin-admob,Jeremy017/cordova-plugin-admob,M4E/cordova-plugin-admob,sangwonl/cordova-plugin-admob,myiwan08/latihan,floatinghotpot/cordova-plugin-admob,agamemnus/cordova-plugin-admob,Jeremy017/cordova-plugin-admob