Added a generic ArduinoAPI.h include folder with API version definitions

Author: cmaglie

api/ArduinoAPI.h

@@ -0,0 +1,26 @@
+/*
+  Arduino API main include
+  Copyright (c) 2016 Arduino LLC. All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+#ifndef ARDUINO_API_H
+#define ARDUINO_API_H
+
+// version 1.0.0
+#define ARDUINO_API_VERSION 10000
+
+#endif