Create nbgrader quickstart command

[jhamrick]

Fixes #338

Ping @willingc -- can you test out this PR and let me know if you think this "quickstart" example works ok?

[willingc]

@jhamrick I had some difficulty testing it this weekend. I wasn't able to get quickstart running which is likely an environment issue on my side. I'll give it a shot later this week and/or we can jam through stuff at the dev meeting.

[jhamrick]

Hmm, ok. What error did you get when you tried to run it?

[willingc]

Basically quickstart didn't run so I'm almost 99% positive it's pilot error.

[jhamrick]

@willingc I have updated the docs for quickstart as per your comments to clarify the course id and the --force flag

[willingc]

@jhamrick Works as advertised :D

A nice enhancement might be to output a message after executing quickstart to tell the user how to begin using the quickstart.

[jhamrick]

Good idea. I'll add something along the lines of "edit the source files in ... and then release them with nbgrader assign ps1" and then also a link to the main docs for further information.

[willingc]

@jhamrick Do you want me to merge this as is? Or wait for the enhancement?

[jhamrick]

I will make the enhancement first.

[jhamrick]

This now will print:

$ nbgrader quickstart course101
[QuickStartApp | INFO] Creating directory '/Users/jhamrick/project/misc/course101'...
[QuickStartApp | INFO] Copying example from the user guide...
[QuickStartApp | INFO] Generating example config file...
[QuickStartApp | INFO] Done! The course files are located in '/Users/jhamrick/project/misc/course101'.

    To get started, you can edit the source notebooks located in:

        /Users/jhamrick/project/misc/course101/source/ps1

    Once you have edited them to your satisfaction, you can create
    the student version by running `nbgrader assign ps1` from the
    '/Users/jhamrick/project/misc/course101' directory.

    For further details, please see the full nbgrader documentation at:

        http://nbgrader.readthedocs.org/

Does that look good to you @willingc ?

[willingc]

@jhamrick This looks great! I am pressing merge 🎉

[jhamrick]

Thanks! 😄