- add ceedling/cmock/unity as testing framework and support

- unified makefile project for the whole repos
- new separate project for tests

tests/vendor/ceedling/lib/file_system_wrapper.rb

@@ -0,0 +1,10 @@
+
+class FileSystemWrapper
+
+  def cd(path)
+    FileUtils.cd path do
+      yield
+    end
+  end
+
+end