Add default package.json

Author: valeros

Diff for: package.json

@@ -0,0 +1,6 @@
+{
+    "name": "framework-arduinoststm32",
+    "description": "Arduino Wiring-based Framework (STM32 Core)",
+    "version": "0.0.0",
+    "url": "https://github.com/stm32duino/Arduino_Core_STM32"
+}