[maven-release-plugin] copy for tag zigbee4java-3.0.1

Added device and group remove commands to gateway console. Fixes tlau…

…kkan#92.

Cleaned up .gitignore and README.md.

[maven-release-plugin] copy for tag zigbee4java-3.0.0

Removed dependency to old serial port implementation and cloudbees re…

…pository.

[maven-release-plugin] copy for tag zigbee4java-2.0.11

Fixed readme.

[maven-release-plugin] copy for tag zigbee4java-2.0.10

[maven-release-plugin] copy for tag zigbee4java-2.0.2

[maven-release-plugin] copy for tag zigbee4java-2.0.1