reorganize data files like tutorials.json

src/components/Tutorial/Requirement.js

@@ -5,7 +5,7 @@ import { connect } from 'react-redux';
 import clsx from 'clsx';
 import { withRouter, Link } from 'react-router-dom';
 
-import tutorials from './tutorials.json';
+import tutorials from '../../data/tutorials.json';
 
 import { fade } from '@material-ui/core/styles/colorManipulator';
 import { withStyles } from '@material-ui/core/styles';