Feature: Add capability to build multiple files.

example/main.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main(void)
+{
+    printf("Hello world!\n");
+    printf("This is build 2!\n");
+    return 0;
+}

example/test.c

@@ -0,0 +1 @@
+