Update build instructions

README.md

@@ -1,3 +1,14 @@
-# Prerequestes
+# Building
 
-` sudo apt install libglm-dev`
+  1. Get the source code:
+    `git clone --recursive https://gitea.burntworld.ca/kienan/game-test.git`
+  2. Install build dependencies:
+    `sudo apt install build-essential cmake freeglut3-dev libgl-dev libglew-dev libglfw3-dev libglm-dev libglx-dev libopengl-dev`
+  3. Create the makefiles:
+    `mkdir -p game-test/build && cd game-test/build && cmake ..`
+  4. Build:
+    `make`
+
+# Running the client
+
+  `./client_imgui`