Merge pull request #25 from vrabaud/nao_viz

Moving NaoJointsAnalyzer from nao_viz, start diagnostic updater by default
Fixing PR #24 for NaoQI 1.12

ALRobotPosture is optional, node no longer exits
Fixing PR #23 for simulation usage

Use class NaoNode as before for proxy creation
Modified nao_tactile node to search for a free port.
Removed hard-coded ports from nao_sensors_cpp and nao_speech.py
Added missing dependency on diagnostics in nao_driver cmake lists.
Merge pull request #31 from jondy276/fixed-missing-diagnostics-dependency

Added missing dependency on diagnostics in nao_driver cmake lists.
Merge pull request #30 from jondy276/nao_tactile_default_port

Modified nao_tactile node to search for a free port.
add a way to get the NAOqi version