Rename sketch to Arduino

Arduino.ino

@@ -0,0 +1,9 @@
+#include <Arduino.h>
+
+void setup() {
+  // Add Studuino initialization here.
+}
+
+void loop() {
+  // Add Studuino code here.
+}

sketch.ino

@@ -1 +0,0 @@
-