Update readme.

README.md

@@ -1,28 +1,39 @@
 # Introduction
-It is so embrassing that the text search feature in Microsoft OneNote is crappy! OneNote just do a text matching over all the pages and return the exact result to handle the query. That's why I want to use Lucene.NET to enhance it.  
+Enchance OneNote Search Functionality with Lucene.Net.  
 This application aims to reimplement all functionallity of [OneNote Search Bar](https://www.onenotegem.com/onenote-search-bar.html)  
 
 # Prerequisite
-Lucene.Net 3.0.3  
-Visual Studio 2017
+Lucene.Net 4.8.0  
+Lucene.Net.Queries  
+Lucene.Net.Analysis.Common  
+Lucene.Net.Analysis.SmartCn  
+Lucene.Net.QueryParser  
+SharpZipLib  
+HtmlAgilityPack  
+System.ValueTuple
+Visual Studio 2019  
 
 # Manual
 ## Installation
 Please download latest release file and unzip it. Then click `setup.exe` to install.
-## First start
+## Index
 You can find this application in Start menu. Click to launch. You will see a simple user interface.
 Click `Index` button and wait, it will index all page content for you.
 
-![Alt text](docs/images/Index.jpg "Title")
+![Alt text](docs/images/Index.jpg "Index Image")
 ## Search
-After finish indexing, type anything you want in search box and click `Search` button. It will accept your query and return top 10 relevant paragraph.
+After finish indexing, type anything you want in search box and click `Search` button. It will accept your query and return relevant paragraph.
 
-![Alt text](docs/images/Search.jpg "Title")  
+![Alt text](docs/images/Search.jpg "Search Image")  
 You can navigate to page where the paragraph from, just double click the row. The target page will display in OneNote.
 
+## Options
+You can change your search result appearance, index cache path, index mode in this page.  
+![Alt text](docs/images/Option.jpg "Options Image")  
+
 # Roadmap
 - [x] Search and List Pages: Search pages in OneNote, and list pages.
-- [ ] Search and List Paragraphs: Search and list paragraphs and highlight the keyword.
+- [x] Search and List Paragraphs: Search and list paragraphs and highlight the keyword.
 - [ ] Search and List Paragraphs with Tag Icons: If search result is a tag paragraph, "Search Bar" list this paragraph with its tag icon.
 - [ ] Search and List Paragraphs with Heading Icons: If search result is a heading paragraph, "Search Bar" list this paragraph with heading icon ( 1 - 6 ).
 - [x] Search and List Image OCR Text