bintreeTest file added

I2_Dobble/bintreeTest.c

@@ -0,0 +1,13 @@
+#include "bintree.h"
+#include "unity.h"
+#include "unity_internals.h"
+
+void setUp(void) { }
+void tearDown(void) { }
+
+int main()
+{
+    UNITY_BEGIN();
+
+    return UNITY_END();
+}