update README

Author: das08

README.md

@@ -1,10 +1,10 @@
 # ComfortablePandATS
 PandAを快適にするブラウザ拡張機能です．
 
-### Readme
+## Readme
 [English](https://github.com/comfortable-panda/ComfortablePandATS/blob/master/README_en.md) | Japanese
 
-### Comfortable Sakai
+## Comfortable Sakai
 Comfortable PandAをその他のSakai LMSでも動作するように改良し，Sakai Communityへコントリビュートするプロジェクトです.
 京都大学のレポジトリで開発しています．  
 [Comfortable-Sakai](https://github.com/kyoto-u/comfortable-sakai)
@@ -16,6 +16,14 @@ Comfortable PandAをその他のSakai LMSでも動作するように改良し，
 - [Microsoft Edge](https://microsoftedge.microsoft.com/addons/detail/njbljhcmnodocldppoiejkcmcebpmljc)
 - [Safari](https://apps.apple.com/jp/app/comfortable-panda/id1572408187?mt=12)
 
+# 手動でのインストール方法
+1. [ここ](https://github.com/comfortable-panda/ComfortablePandATS/releases/tag/v3.5.2) から最新の`Comfortable-PandA.zip`をダウンロードします．
+2. `Comfortable-PandA.zip`を展開します． 
+3. Chromeで `chrome://extensions/` を開きます.
+4. 右上の**デベロッパー　モード**を有効化してください.
+5. 左上の**パッケージ化されていない拡張機能を読み込む**ボタンをクリックします.
+6. 展開したフォルダーを選択し，インストールします.
+
 # 使い方
 1. ダウンロードリンクから，拡張機能をブラウザにインストールします．
 1. PandAにログインします．
@@ -41,7 +49,7 @@ Comfortable PandAをその他のSakai LMSでも動作するように改良し，
 また，メモ機能を使うことでminiPandA上に課題メモを追加することができます．
 
 
-# キャッシュ機能
+## キャッシュ機能
 PandAへの負荷を軽減するために課題・クイズ取得にキャッシュ機能を導入しています．
 デフォルトのキャッシュ間隔は以下のとおりです．
 - 課題取得---2分間

README_en.md

@@ -1,6 +1,6 @@
 # ComfortablePandATS
 A Web browser extention that makes PandA life comfortable.  
-**ONLY AVAILABLE IN PandA**. Use [Comfortable-Sakai](https://github.com/kyoto-u/comfortable-sakai) for other Sakai LMS.
+**ONLY WORKS IN PandA**. Use [Comfortable-Sakai](https://github.com/kyoto-u/comfortable-sakai) for other Sakai LMS.
 
 ## Readme
 English | [Japanese](https://github.com/comfortable-panda/ComfortablePandATS/blob/master/README.md)
@@ -11,20 +11,22 @@ Developing in the repository of Kyoto University.
 [Comfortable-Sakai](https://github.com/kyoto-u/comfortable-sakai)
 
 # Installation links
-**ONLY AVAILABLE IN PandA**. Use [Comfortable-Sakai](https://github.com/kyoto-u/comfortable-sakai) for other Sakai LMS.  
+**ONLY WORKS IN PandA**. Use [Comfortable-Sakai](https://github.com/kyoto-u/comfortable-sakai) for other Sakai LMS.  
 - [Google Chrome Store](https://chrome.google.com/webstore/detail/comfortable-panda/cecjhdkagakhonnmddjgncmdldmppnoe)
 - [Firefox](https://tinaxd.github.io/comfortable-panda-firefox-updates/index.html)
 - [Microsoft Edge Store](https://microsoftedge.microsoft.com/addons/detail/njbljhcmnodocldppoiejkcmcebpmljc)
 
 
 # Manual installation(not recommended)
-1. Go to `chrome://extensions/` on your Google Chrome
-1. Enable **developer mode**.
-1. Click **LOAD UNPACKED** button on upper left hand corner.
-1. Select this folder(comfortable-panda) and install.
-1. You are all set:)
-
-# How to compile
+1. Download latest version of `Comfortable-PandA.zip` from [HERE](https://github.com/comfortable-panda/ComfortablePandATS/releases/tag/v3.5.2).
+2. Unzip `Comfortable-PandA.zip`.
+3. Go to `chrome://extensions/` on your Google Chrome.
+4. Enable **developer mode**.
+5. Click **LOAD UNPACKED** button on upper left corner.
+6. Select the folder you unzipped and install.
+7. You are ready to use :)
+
+# How to compile from source code
 Run
 ```
 npx webpack
@@ -37,8 +39,8 @@ in the root directory of cloned repository.
 1. Done. Your upper tab color is changed and ☰ icon is displayed.
 
 # Features
-## Tab coloring
-Colors lecture tab according to due date.
+## Color-coded course site tabs
+Colors course site tabs according to the assignment due date.
 - ![#f03c15](https://via.placeholder.com/15/e85555/000000?text=+)
   Due date <= 1 Day ahead
 - ![#f03c15](https://via.placeholder.com/15/d7aa57/000000?text=+)
@@ -58,7 +60,7 @@ You can add your custom assignment to miniPandA with PLUS button located on the
 
 Also check box is available for you to distinguish completed assignments from working assignments.
 
-# Cache
+## Cache
 In order to reduce the network load on PandA, we have implemented a cache function for getting assignments and quizzes.
 The default cache interval is as follows
 - Assignment fetching --- 2 minutes