docs: edit .gitignore and index

* GitHub Page: https://doocs.github.io/advanced-java
* Gitee Page: https://doocs.gitee.io/advanced-java
* Author: https://github.com/yanglbme

.gitignore

@@ -1,35 +1,2 @@
-/gradle/wrapper/gradle-wrapper.properties
-##----------Android----------
-# build
-*.apk
-*.ap_
-*.dex
-*.class
-bin/
-gen/
-build/
-
-# gradle
-.gradle/
-gradle-app.setting
-!gradle-wrapper.jar
-build/
-
-local.properties
-
-##----------idea----------
-*.iml
-.idea/
-*.ipr
-*.iws
-
-# Android Studio Navigation editor temp files
-.navigation/
-
-##----------Other----------
-# osx
-*~
 .DS_Store
-gradle.properties
-
 .vscode

README.md

@@ -1,4 +1,4 @@
-# 互联网 Java 工程师进阶知识完全扫盲<sup>[©](https://github.com/doocs/advanced-java)</sup>
+# 互联网 Java 工程师进阶知识完全扫盲<sup>[©](https://github.com/yanglbme)</sup>
 [![license](https://badgen.net/github/license/doocs/advanced-java?color=green)](https://github.com/doocs/advanced-java/blob/master/LICENSE)
 [![original](https://badgen.net/badge/original/%E4%B8%AD%E5%8D%8E%E7%9F%B3%E6%9D%89/orange)](https://github.com/doocs/advanced-java)
 [![notice](https://badgen.net/badge/notice/%E7%BB%B4%E6%9D%83%E8%A1%8C%E5%8A%A8/red)](/docs/from-readers/rights-defending-movement.md)

index.html

@@ -35,14 +35,13 @@
     </ul>
 
   </nav>
-  <div id="app">Welcome to Advanced-Java</div>
+  <div id="app">本知识仓库由 Doocs 开源社区总结发布</div>
   <script>
     window.$docsify = {
       name: 'advanced-java',
       repo: 'doocs/advanced-java',
       maxLevel: 3,
       auto2top: true,
-      loadNavbar: false,
       coverpage: true,
       coverpage: 'docs/extra-page/cover.md',
       mergeNavbar: true,