add raylib and test window

README.md

@@ -4,10 +4,20 @@ Work in progress.
 
 Goals are: parsing an IGC file containing flight data, giving analytics about the flight, and if I really have time to kill, making some kind of (3D??) view of the flight..
 
-TODO:
-- header parsing
-- data point doubly linked list
-- Raylib 3d 3rd person flight line visualization????
+# Dependencies
+
+These are mainly for Raylib (the 3D library):
+
+```
+sudo apt install libasound2-dev libx11-dev libxrandr-dev libxi-dev libgl1-mesa-dev libglu1-mesa-dev libxcursor-dev libxinerama-dev libwayland-dev libxkbcommon-dev
+```
+
+# Compilation & Usage
+
+```
+make
+./a.out <file>
+```
 
 # License