Setting up 0.0.3-SNAPSHOT

- Updating version number.
- adding general java maven .gitignore

Change-Id: Ide099b2f0e6cdf7ab3b5526e618cda798ca09e15
Making KafkaComponent.TOPIC_NAME more specific.

Change-Id: I9606dfdc076aa2100d68d30ca141183d622d5db2
Updating the conversion of message bodies to byte[].

Rely on the camel TypeConverter to serialize objects.

Change-Id: I035923a181410bd59a7b8eee483f88853a052268
Release 0.0.3

Change-Id: Ida6d8c1ebe70d764d257636e8aa60074d1c98f08