In main.js, you can simply assign Axios $ http.
main.js
import Axios from 'axios'
Vue.prototype.$http = Axios;
By modifying the vue prototype, any vue instance will be able to invoke $httpon this. (eg,this.$http.get('https://httpbin.org/get')
Note: $httpit is now an axios object, so any method that you can call for the axios object can be called this.$http.