Update new features in readme file.

Author: mohammadKarimi

README.md

@@ -54,7 +54,8 @@ Riter is a modern, versatile screen drawing application built with WPF (Windows
 ### ⚙️ Settings and Customization
 - **Settings Panel**: Customize colors, brush sizes, application behavior, and more.
 - **Global Hotkeys**: Access tools quickly with keyboard shortcuts, even when the app is out of focus.
-
+- **Startup Location**: You can set your fav Start up location (center, BottomCenter, BottomLeft, BottomRight).
+- 
 ### 🚀 Performance
 - **Efficient Stroke Handling**: Optimized stroke management ensures smooth performance during extended usage.
 
@@ -97,6 +98,7 @@ Riter is a modern, versatile screen drawing application built with WPF (Windows
 - **9** - Black
 
 ### Draw Shape
+- **Ctrl + L** -> Line
 - **Ctrl + A** -> Arrow
 - **Ctrl + R** -> Rectangle
 - **Ctrl + C** -> Circle