update docs

Author: Chen1Plus

docs/README.md

@@ -1,4 +1,4 @@
-# Installation
+<!-- # Installation
 
 #### Windows
 
@@ -7,37 +7,41 @@
 
 ```powershell
 ./tytm update
-```
+``` -->
 
 <!-- #### MacOS
 
 Currently, a pre-built executable is not available. See [build](#build) for more. -->
 
 # Usage
 
-#### Update manifests
+<!-- #### Update manifests
 
 TyTM uses manifests to obtain the necessary information for fetching themes.
 
 ```shell
 ./tytm update
-```
+``` -->
 
 #### Install a theme
 
-You can install a theme using its unique ID. Browse [themes](themes/index) to see the available themes.
+You can install a theme using its url.
+
+- If the url points to a zip file, use `-u zip` flag.
+- If the url points to a git repository, use `-u git` flag.
+
 
 ```shell
-./tytm add <ID>
+./tytm add -u <TYPE> <URL>
 ```
 
-#### Remove a theme
+<!-- #### Remove a theme
 
 You can simply use the same id to remove a theme.
 
 ```shell
 ./tytm remove <ID>
-```
+``` -->
 
 <!--
 

docs/_coverpage.md

@@ -1,4 +1,4 @@
-# TyTM <small>0.2.6</small>
+# TyTM <small>0.3.0</small>
 
 > A theme manager for Typora.
 

docs/_sidebar.md

@@ -1,5 +1,3 @@
 * [**Getting Started**](README)
-  * [Installation](README#installation)
+  <!-- * [Installation](README#installation) -->
   * [Usage](README#usage)
-
-* [**Themes**](themes/index)