add missing lib

lib/ArduinoJson/scripts/travis/platformio.sh

@@ -0,0 +1,10 @@
+#!/bin/sh -eux
+
+pip install --user platformio
+
+rm -r test
+
+for EXAMPLE in $PWD/examples/*/*.ino; 
+do
+	platformio ci $EXAMPLE -l '.' -b $BOARD
+done