detailed tutorial for open data

The tutorial is based on GW150914.py, with the addition of more in depth comments. The code has been adapted to be used for other LOSC events, i.e. all arguments are explicitly specified (e.g. interferometer_names, sample_rate, npoints..), so that they can be easily edited by the user.

examples/open_data_examples/GW150914_advanced.py

 #!/usr/bin/env python
 """
-This tutorial includes advanced specifications for analysing know events.
-This should simplify the comparison wiht LALInference results.
+This tutorial includes advanced specifications for analysing known events.
 Here GW150914 is used as an example.
 
 LIST OF AVAILABLE EVENTS: Run -> help(bilby.gw.utils.get_event_time(event))