Fix diff2html errors due to version upgrade #7

+ upgrade diff2html version on lib package too

Author: AXeL-dev

README.md

@@ -44,7 +44,7 @@ npm install --save ngx-diff2html
 
 ```diff
   /* You can add global styles to this file, and also import other style files */
-+ @import "~diff2html/dist/diff2html.min.css";
++ @import "~diff2html/bundles/css/diff2html.min.css";
 ```
 
 **3**. You may also need to add the following lines to `polyfills.ts`:

projects/demo/src/styles.css

@@ -1,3 +1,3 @@
 /* You can add global styles to this file, and also import other style files */
 
-@import "~diff2html/dist/diff2html.min.css";
+@import "~diff2html/bundles/css/diff2html.min.css";

projects/ngx-diff2html/package.json

@@ -17,7 +17,7 @@
   "homepage": "https://axel-dev.github.io/ngx-diff2html",
   "dependencies": {
     "diff-match-patch": "^1.0.4",
-    "diff2html": "^2.12.2",
+    "diff2html": "^3.0.0",
     "path": "^0.12.7"
   },
   "peerDependencies": {

projects/ngx-diff2html/src/lib/ngx-diff2html.service.ts

@@ -1,6 +1,6 @@
 import { Injectable } from '@angular/core';
 import { diff_match_patch } from 'diff-match-patch';
-import { Diff2Html } from 'diff2html';
+import * as Diff2Html from 'diff2html';
 import { DiffFormat, DiffStyle } from './ngx-diff2html.model';
 
 @Injectable({
@@ -45,8 +45,8 @@ export class NgxDiff2htmlService {
   }
 
   diffToHTML(diff: string, format: DiffFormat = 'line-by-line', style: DiffStyle = 'word') {
-    return Diff2Html.getPrettyHtml(diff, {
-      inputFormat: 'diff',
+    return Diff2Html.html(diff, {
+      drawFileList: false,
       matching: 'lines',
       outputFormat: format,
       diffStyle: style