Updates version to 0.8.4
Updates version to 0.8.4

brentvatne/react-native-side-menu,Kureev/react-native-side-menu,IVaE-Consultants/react-native-side-menu,sghiassy/react-native-side-menu,Kureev/react-native-side-menu,jeffreywescott/react-native-side-menu,react-native-fellowship/react-native-side-menu,linjson/react-native-side-menu,michaelcontento/react-native-side-menu,skv-headless/react-native-side-menu,rollick/react-native-side-menu,thstarshine/react-native-side-menu,gorangajic/react-native-side-menu,helielson/react-native-side-menu