v2.0.2: Add header file matching library name (#23)

* Add header file matching library name

This allows the library to be correctly selected using the proper
include file instead of DHT.h (that may lead to the inclusion of another
DHT library).

This is the releavnt WARNING after running arduino-lint:

Linting library in /home/megabug/Workspace/Grove_Temperature_And_Humidity_Sensor
WARNING: No header file found matching library name (Grove_Temperature_And_Humidity_Sensor.h). Best practices are for
         primary header filename to match library name.
         See: https://arduino.github.io/arduino-cli/latest/library-specification/#libraryproperties-file-format
         (Rule LS008)

* Release version 2.0.2

v2.0.1

• DHT11 accuracy fix
• Add DHT20 support
• Update DHTtester.ino
• Added support for Xiao RP2040 and NRF52840
• Increase stability
• Fixed support for XIAO_ESP32

v2.0.0

• Pretty printed the Arduino code with astyle
• Add travis.yml, build status and fix travis.yml write error
• Fix compile error

1.0.1

update version

1.0.0

Release for Arduino Library Manager