comet_payone 2.0.0+2

Comet payone for Flutter package to connect to bcel, developed by comet.

1.1.0

clean code

2.0.0

Add documents, clean up example, create unit test

• Readme.
• Description.
• Clean up example.
• Update unit test.

2.0.0+2

Fix observe transection in android and make ios support