Move checkbox items into array "items" prop & fix default selected values
Move checkbox items into array "items" prop & fix default selected values

kenma9123/react-native-material-ui,mobileDevNativeCross/react-native-material-ui,blovato/sca-mobile-components,react-native-material-design/react-native-material-design,ajaxangular/react-native-material-ui,thomasooo/react-native-material-design,xotahal/react-native-material-ui,xvonabur/react-native-material-ui