add build instruction and key binding info

README.md

@@ -3,8 +3,63 @@ Kröhnkite
 
 A dynamic tiling extension for KWin.
 
-Useful Resources
-----------------
+Kröhnkite is mainly inspired by [dwm][] from suckless folks, and aims to be
+"simple" in both development and usage.
+
+[dwm]: https://dwm.suckless.org/
+[Typescript]: https://www.typescriptlang.org/
+
+
+Build & Install
+---------------
+
+You can install Kröhnkite in multiple ways.
+
+The simplest method would be:
+
+	make install
+
+This will automatically build and install kwinscript package. Note that you can
+manually build package file using `make package`. The generated package file
+can be imported from "KWin Script" dialog in "System Settings".
+
+If you don't want to install the script, but still want to try, you can:
+
+	make run
+	make stop
+
+to temporarily load (and unload) the script to KWin. You may also want to
+restart KWin w/:
+
+	kwin_x11 --replace
+
+New instance will replace the current one, and print debugging message(i.e.
+`console.log`) to terminal. This is useful for testing and debugging.
+
+
+Default Key Bindings
+--------------------
+
+| Key               | Action                         |
+| ----------------- | ------------------------------ |
+| Meta + J          | Focus Down/Next                |
+| Meta + K          | Focus Up/Previous              |
+| Meta + H          | Left                           |
+| Meta + L          | Right                          |
+|                   |                                |
+| Meta + Shift + J  | Move Down/Next                 |
+| Meta + Shift + K  | Move Up/Previous               |
+| Meta + Shift + H  | Move Left                      |
+| Meta + Shift + L  | Move Right                     |
+|                   |                                |
+| Meta + I          | Increase                       |
+| Meta + D          | Decrease                       |
+| Meta + F          | Toggle Floating                |
+| Meta + \          | Cycle Layout                   |
+
+
+Useful Development Resources
+----------------------------
 
  * [KWin Scripting Tutorial](https://techbase.kde.org/Development/Tutorials/KWin/Scripting)
  * [KWin Scripting API 4.9 Reference](https://techbase.kde.org/Development/Tutorials/KWin/Scripting/API_4.9)