Add some Makefiles and README to make it obvious how to run

Makefile

@@ -0,0 +1,7 @@
+APP_NAME=chip8-app
+
+build:
+	go build -o ${APP_NAME}
+
+run: build
+	./${APP_NAME} -rom "test_opcode.ch8"

README.md

@@ -1 +1,39 @@
-# chip8
+# Chip 8
+
+## Intro
+
+This is my implementation of the Chip 8 "Emulator" in Go. Chip 8 was a VM that was written for the
+Cosmac VIP computer. There's plenty of good articles that explain what it is and how to write one,
+such as this one:
+
+https://tobiasvl.github.io/blog/write-a-chip-8-emulator/
+
+This is not an emulator as such as it does not emulate hardware and is really an interpreter that
+executes bytecode. This bytecode can be found in ROMs that you can download from all over the
+internet. A simple one is included in this repository.
+
+## Status
+
+Most of the opcodes have been implemented however there are some issues with some ROMs. 
+
+## Running
+
+There is a Makefile included that you can use to build and run. It has been built and run on a
+Mac and has not been tested on anything else! To compile the project run:
+
+`make`
+
+To run with the included ROM, run:
+
+`make run`
+
+If you want to run a different ROM, you do:
+
+`./chip8-app -rom "test_opcode.ch8"`
+
+
+## The code
+
+The bulk of the code is in the `chip8` directory and package. This contains the core logic. You
+can run the tests from within this directory by running `make test`. The `main`program and anything 
+to do with the display can be found in the main package. I use SDL to interact with the display.

chip8/Makefile

@@ -0,0 +1,2 @@
+test:
+	go test -v