revise readme

README.md

@@ -1,19 +1,19 @@
-## LiteNes
+## LiteNES
 
 This project is a fork of Stanislav Yaglo's mynes (https://github.com/yaglo/mynes).
 We mainly refactored the project for brevity and portabilty,
 by removing unused comments and changing the file structure.
-LiteNes runs classical roms (e.g., Battle City, Yie-Ar Kung Fu and Super Mario),
+LiteNES runs classical roms (e.g., Battle City, Yie-Ar Kung Fu and Super Mario),
 but has only partial support of NES roms, and does not support the emulation of APU.
 
-The key feature of LiteNes is its *portability*:
+The key feature of LiteNES is its *portability*:
 the system-call-dependent code is reduced to minimal
 (only appears in `hal.c` and `main.c`).
 All other sources *do not contain any direct or indirect calls to the operating system kernel*.
 Also, the only calls to standard C library are memory movements (e.g., `memcpy` and `memcmp`).
 
 ### Compilation
-To compile LiteNes, you must have *allegro5* library.
+To compile LiteNES, you must have *allegro5* library.
 Usually you can install it in the official software repository
 (by `apt-get`, `yum`, `pacman` or `emerge`, depending on your Linux distribution).
 
@@ -22,10 +22,10 @@ the `litenes` binary file is created.
 
 ### Game Play
 You need to prepare a NES rom first.
-Assume it (`rom.nes`) is located in the same directory as the LiteNes binary.
+Assume it (`rom.nes`) is located in the same directory as the LiteNES binary.
 Then in this directory, type `./litenes rom.nes` to start the emulator.
 
 Key bindings: UP - `W`, DOWN - `S`, LEFT - `A`, RIGHT - `D`, SELECT - `U`,
 START - `I`, A - `K` and B - `J`. Only one player is supported.
 
-![LiteNes running Yie-Ar Kung Fu](https://raw.github.com/NJUOS/litenes/kungfu.png)
+![LiteNES running Yie-Ar Kung Fu](https://raw.github.com/NJUOS/litenes/master/kungfu.png)