Update simple_goto example to use dronekit-sitl by default

Minor tidy up to wording of using dk-sitl

Improve code for closing sitl in examples

Update  mission_import_export.py to use dk-sitl by default

Increase timeouts, factor out a wait_for call

Update best_practice.rst

Harmonise nosetest options across each of the integration platforms

This should make the outputs comparable

Fix mount status to return float degrees, not int degrees

Temporarily disable web tests - failing with DRONEAPI_KEY issue

Make drone delivery example use DK-SITL simulator

Drone delivery home - sets the home location to be initial location, and the map aligns correctly.

Wait for the vehicle to supply us with a location before starting
the web server

Fixes #362

Hgw performance example

Add easy_install to docs as alternative to apt-get for installing pip

UPdate copyright range to 2015-2016

Hgw tidy mgrennan patch

Fix incorrect property marker for airspeed

Rebased and waited for tests to pass.  Thanks Daniel!

Remove Unnecessary import

Fix minor typo in sitl introduction

Update the readme for ask community to share their cool uses of DK

small typo fix on quick-start guide