Added a moving average filter to smooth out the readings.
This seems to have worked pretty well but I'm still seeing some random spikes come through. I'll try to get rid of those with another filter.
Merge branch 'master' of github.com:col/mbed-9dof

# By Col
# Via Col
* 'master' of github.com:col/mbed-9dof:
  Fixed image url in readme.
Fixed a bug in the code the reads and writes the values over the serial connection.