Added code snippet that will allow strings to work for us until this is present upstream

Author: ed7coyne

src/throw_out_of_range.cpp

@@ -0,0 +1,9 @@
+#include <Arduino.h>
+
+//TODO(edcoyne): remove this when it is present upstream.
+// Currently this is needed to use std::string on Arduino.
+namespace std{
+void __throw_out_of_range(const char* str) {
+    panic();
+}
+}