Update README.md

README.md

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 # TM_SubstTable_Editor
 
+**Intro:**
+
+To automatically create a match table from the Twinmotion material csv file exported from User Library,
+provides basic edit function like insert, delete items and export edited match data to Excel file, 
+as well as to compare data between the newly export material library and the previously edited match table.
+
+可依據 Twinmotion 位於 User Library 中的材料資源庫所導出的 CSV 創建材料匹配清單,
+除了可做基本的編輯和導出匹配Excel外, 可以再對新導出的資源庫和匹配清單重新進行資料匹配。
+
+--
+
+**Link:**
+
+Web App:
 https://zefreestijl.github.io/TM_SubstTable_Editor/
+
+
+Download Desktop App (by Electron):
+https://github.com/zefreestijl/TM_SubstTable_Editor/releases/tag/app
+
+--
+
+**0. UI Outlook:**
+
+
+
+
+**1. Loading Material Library CSV File from Twinmotion:**
+
+
+
+
+**2. Loading Previously Exported Match Table Excel File:**
+
+
+
+
+**3. Data Comparison Note:**
+"1. New Added" - no matched material found in match table → will create new item automatically.
+"2. ID Replaced" - current material ID has been changed → will update to new ID automatically.
+"3. Has Deleted" - material has been removed from library → new match table will ignore the item.
+
+
+
+--
+
+**0. 基本操作介面說明:**
+
+
+
+**1. 載入 Twinmotion User Library 材料清單步驟說明:**
+
+
+
+**2. 自動生成的匹配表單基本功能說明:**
+
+
+
+**3. 資料匹配狀況說明:**
+1. "新添加的材料" - 現有的匹配表單中未找到Twinmotion中的該項材料 → 將自動新建該材料匹配欄位
+2. "ID更新的材料" - 當前Twinmotion的材料ID已被替換過 → 將自動更新材料匹配清單的材料ID
+3. "已刪除的材料" - Twinmotion中的該項材料已被刪除 → 導出新的材料匹配清單時將會忽略該項材料