added the readme

shaders/geometry.vert

@@ -0,0 +1,24 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoord;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoord;
+out vec4 FragPosLightSpace;
+
+uniform mat4 proj;
+uniform mat4 view;
+uniform mat4 modl;
+uniform mat4 lightSpaceMatrix;
+
+void main()
+{
+    vec4 worldPos   = modl * vec4(aPos, 1.0);
+    FragPos         = worldPos.xyz;
+    Normal          = normalize(mat3(transpose(inverse(modl))) * aNormal);
+    TexCoord        = aTexCoord;
+    FragPosLightSpace = lightSpaceMatrix * worldPos;
+    gl_Position     = proj * view * worldPos;
+}