update README

README.md

@@ -21,6 +21,7 @@ In general, writing kernel in Go is a very interesting experience. On the one ha
 
 ![js](https://i.imgur.com/Canhd8D.gif)
 ![nes](https://i.imgur.com/WugXcTk.gif)
+![gui](https://i.imgur.com/jILuMMk.png)
 
 
 # Feature list
@@ -33,6 +34,7 @@ In general, writing kernel in Go is a very interesting experience. On the one ha
 - A Javascript interpreter using [otto](https://github.com/robertkrimen/otto)
 - VBE based frame buffer.
 - Some simple network apps(httpd, sshd).
+- GUI support by [nucular](https://github.com/aarzilli/nucular).
 
 
 # Dependencies
@@ -89,7 +91,7 @@ The multiboot.elf generated after executing the make command is a kernel image c
 
 # Documentation
 
-For some design details see [docs/internal.md](docs/internal.md)
+[docs/README.md](docs/README.md)
 
 # Roadmap
 

docs/README.md

@@ -0,0 +1,7 @@
+# Command line usage
+
+[command usage](./usage.md)
+
+# Design internal
+
+[design internal](./internal.md)

docs/usage.md

@@ -0,0 +1,84 @@
+# Javascript interpreter
+
+``` sh
+root@eggos# js
+>>> console.log("hello world")
+hello world
+>>> reg = new RegExp("hello")
+>>> console.log(reg)
+/hello/
+>>> resp = reg.test("hello world")
+>>> console.log(resp)
+true
+>>> var url = "http://baidu.com"
+>>> resp = http.Get(url)
+>>> console.log(resp)
+<html>
+<meta http-equiv="refresh" content="0;url=http://www.baidu.com/">
+</html>
+```
+
+# Mount samba filesystem
+
+``` sh
+root@eggos# mount smb://icexin:eggos@172.28.90.3:445/sambashare /share
+root@eggos# cd /share
+root@eggos# ls
+-rw-rw-rw- 111 fib.js
+root@eggos# cat fib.js
+function fib(n) {
+        if (n == 1 || n == 2) {
+                return 1;
+        }
+        return fib(n-1) + fib(n-2);
+}
+
+console.log(fib(10))
+
+root@eggos# js fib.js
+55
+
+```
+
+# Run nes emulator
+
+First run `QEMU_GRAPHIC=true QEMU_ACCEL=true mage graphic`
+
+``` sh
+root@eggos# ls /share
+-rw-rw-rw- 111   fib.js
+-rw-rw-rw- 40976 mario.nes
+root@eggos# nes -rom /share/mario.nes
+```
+
+- `W`, `S`, `A`, `D` mapping `up`, `down`, `left` and `right`.
+- `K`, `J` mapping `A` and `B`
+- `space` and `enter` mapping `select` and `start`
+- `Q` to quit game.
+
+# GUI
+
+First run `QEMU_GRAPHIC=true QEMU_ACCEL=true mage graphic`
+
+``` sh
+root@eggos# uidemo
+```
+
+
+# Chipmunk2D physics engine
+
+First run `QEMU_GRAPHIC=true QEMU_ACCEL=true mage graphic`
+
+``` sh
+root@eggos# phy
+```
+
+# HTTP server
+
+Running a HTTP server in background.
+
+``` sh
+root@eggos# go httpd
+```
+
+visit http://127.0.0.1:8080/debug/pprof in browser