Make LazyLoadImage a PureComponent

Author: Aljullu

src/components/LazyLoadImage.jsx

@@ -1,7 +1,7 @@
 import React from 'react';
 import { PropTypes } from 'prop-types';
 
-class LazyLoadImage extends React.Component {
+class LazyLoadImage extends React.PureComponent {
   constructor(props) {
     super(props);