add new method reload, example to README
Merge pull request #14 from stefanocudini/master

Add new reload() method
Group public methods together (cleanup)

Signed-off-by: Maxime Petazzoni <max@signalfuse.com>
Add the average moving speed functions

* get_moving_speed(): returns the average moving speed in km per hour
* get_moving_speed_imp() : returns the average moving pace in miles per
  hour
Merge commit 'mpetazzoni/master'