Update README and INSTALL

INSTALL.md

@@ -3,6 +3,7 @@
 Contents:
 
 - [Prerequisites](#prerequisites)
+- [Build the ROM](#build-the-rom)
 
 ## Prerequisites
 
@@ -16,3 +17,7 @@ python -m pip install -r tools/requirements.txt
 python tools/setup.py
 ```
 
+## Build the ROM
+
+To build the ROM, simply run `make` in the root directory.
+

README.md

@@ -0,0 +1,11 @@
+# The Legend of Zelda: Phantom Hourglass
+
+**Work in progress!** This project aims to recreate source code for ***The Legend of Zelda: Phantom Hourglass*** by decompiling
+assembly code by hand. **The repository only contains code.** To build the ROM, you must own an existing copy of the game to
+extract assets from.
+
+**Note:** The project can not build a ROM yet. Furthermore, it only targets the European version, and other versions will
+be supported later.
+
+## How to install
+See [INSTALL.md](INSTALL.md) for instructions on how to install the project.