add arduino json lib

#182

lib/ArduinoJson/test/Misc/CMakeLists.txt

@@ -0,0 +1,18 @@
+# ArduinoJson - arduinojson.org
+# Copyright Benoit Blanchon 2014-2018
+# MIT License
+
+add_executable(MiscTests 
+	deprecated.cpp
+	FloatParts.cpp
+	std_stream.cpp
+	std_string.cpp
+	StringBuilder.cpp
+	StringTraits.cpp
+	TypeTraits.cpp
+	unsigned_char.cpp
+	vla.cpp
+)
+
+target_link_libraries(MiscTests catch)
+add_test(Misc MiscTests)