Adding initial code for feature "GelfKafkaHandler"

[cejus]

This is merge includes the initial code for adding the feature of an GelfKafkaHandler to pygelf.

Included:

• GelfKafkaHandler class with basic functionality
• Documentation

Not Included:

• Enhancement of testing for kafka support
• Adding further configuration options for kafka producer

Thanks in advance!

[keeprocking]

Thanks a lot. I'll merge it into a separate branch and add some necessary things like tests and everything else.

[cejus]

You're welcome!

Please just let me know if you have some questions or if I can help you extending your test environment.