docs: Update README & TUI

README.md

@@ -10,10 +10,23 @@ It just a practice for npyscreen, this respository may not update any more.
 
 ## Usage
 
-`python main.py`
+- Change Language Settings: `vim config.json`
+    - You can find Language Code in [ISO-639-1](https://en.wikipedia.org/wiki/ISO_639-1) or [Google Support](https://cloud.google.com/translate/docs/languages) or `LanguageCode.csv`
+    ```
+        {
+            "inputLanguage": "en",
+            "outputLanguage": "zh-TW"
+        }
+    ```
+
+- Start
+    - `python main.py`
 
 ## Controls
 
 - Send Request: `ALT + ENTER`
 - Delete all input: `CTRL + D`
 - Exit: `Ctrl + Q`
+- Select Language: `Ctrl + S`
+    - Select other Widget: `TAB`/`Shift+TAB`
+    - Select: `ENTER`

TUI/MainForm.py

@@ -53,9 +53,10 @@ class MainForm(npyscreen.FormBaseNew):
 
         It just a practice for npyscreen, this respository may not update any more.
 
-        -    ^Q           :         quit
+        -    ^Q           :         Quit
-        -    ALT + ENTER  :         search
+        -    ALT + ENTER  :         Search
-        -    CTRL + D     :         delete all input
+        -    CTRL + D     :         Delete all input
+        -    CTRL + S     :         Select Language
             ''',
             editable=False
         )