Added module documentation to the readme

README.md

@@ -10,3 +10,25 @@ Returns the last event. Doesn't actually work right now.
 
 #### h(...)
 Pushes an event to the queue, with whatever data you specify. Generally used for IPC.
+### Module APIs
+#### library/print.lua
+These functions should be display device indepentent.
+##### print(...)
+Displays its arguments on the display device as a string, with a newline.
+##### write(...)
+Displays its arguments on the display device as a string, without a newline
+#### drivers/keyboard.lua
+This is a device-specific driver.
+##### readln()
+Reads a line of input from the keyboard.
+#### library/net.lua
+Note: Settings have to be set in the kernel module, at the line
+```
+tM,nP,nID = {}, 4096, 1
+```
+Where 4096 is the port and 1 is the device ID. Device ID can be any data type, port must be a number.
+
+Network messages can be read from `_G.ev`, they have the type `net_msg`
+##### ns(id,po,msg)
+Sends network message `msg` to device `id` on port `po`
+