updated README

Author: bart9h

README.md

@@ -6,11 +6,17 @@
 http://github.com/bart9h/2n
 
 
+## Installation
+
+Just run `make` to compile.
+There are no dependencies beyond GNU make and gcc.
+
+
 ## How to play
 
 Use `w`, `a`, `s`, `d` or vi arrow keys (`h`, `j`, `k`, `l`) to play.
 
-`m` to cycle through draw modes.
+`m` to cycle through draw modes (fancy, compact and ultra-compact).
 
 `n` resets the board (new game).
 
@@ -20,4 +26,16 @@ Game is automatically saved/loaded in `~/.2nrc`
 
 Set environment variable `SIZE` to change the board size
 (effective on next board init), must be between 3 and 16.
+
 Example: `SIZE=8 ./2n`
+
+
+## Navigating the source code:
+
+* 2n.c: main() and drawing
+
+* game.c, game.h: game logic
+
+* itr.c, itr.h: cell iterator
+
+* rawkb.c, rawkb.h: get input from the keyboard

rawkb.c

@@ -16,15 +16,13 @@ bool RawKb_Open (rawkb_mode_t mode)
 {
 	rawkb_data.mode = mode;
 
-	// le estado atual
+	// read current state
 	if(tcgetattr(STDIN_FILENO, &rawkb_data.tc_original) == -1) {
 		perror("tcgetattr");
 		return false;
 	}
 
 	struct termios tc;
-
-	// altera pra ler sem echo e nao esperar enter
 	tc = rawkb_data.tc_original;
 
 	// don't wait for <enter>