Demos: output api version in vulkaninfo
diff --git a/demos/vulkaninfo.c b/demos/vulkaninfo.c
index 3e69e3f..9e907d6 100644
--- a/demos/vulkaninfo.c
+++ b/demos/vulkaninfo.c
@@ -1058,12 +1058,21 @@
 
 int main(int argc, char **argv)
 {
-    struct app_gpu gpus[MAX_GPUS];
+	unsigned int major, minor, patch;
+	struct app_gpu gpus[MAX_GPUS];
     VkPhysicalDevice objs[MAX_GPUS];
     uint32_t gpu_count, i;
     VkResult err;
     struct app_instance inst;
 
+	major = VK_API_VERSION >> 22;

+	minor = (VK_API_VERSION >> 12) & 0x4ff;

+	patch = VK_API_VERSION & 0xfff;

+	printf("===========\n");

+	printf("VULKAN INFO\n");
+    printf("===========\n\n");
+    printf("Vulkan API Version: %d %d %d\n\n", major, minor, patch);
+
     app_create_instance(&inst);
 
     printf("Instance Extensions and layers:\n");