restructuration

README.md

@@ -6,19 +6,28 @@ Goals are: parsing an IGC file containing flight data, giving analytics about th
 
 # Dependencies
 
-These are mainly for Raylib (the 3D library):
+These are mainly for building the project, and for Raylib (the 3D graphic 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
+sudo apt install build-essential git
+```
+
+You will have to compile Raylib, and then copy the archive file into igcp's `lib` directory:
+
+```
+git clone --depth 1 https://github.com/raysan5/raylib.git raylib
+cd raylib/src/
+make PLATFORM=PLATFORM_DESKTOP
+
+cp libraylib.a PATH/TO/igcp/lib/
 ```
 
 # Compilation & Usage
 
+Now you can compile igcp and use it:
+
 ```
 make
 ./a.out <file>
 ```
-
-# License
-
-GNU GPL v3