Adding spine-cpp-unit-tests dir

spine-cpp/spine-cpp-unit-tests/main.cpp

@@ -0,0 +1,7 @@
+#include <iostream>
+
+int main(int argc, const char * argv[])
+{
+    std::cout << "Awww yeah, gonna test some stuff here eventually!\n";
+    return 0;
+}