Put the 'feeds' command help text in sorted order

[kichalla]

Looks like other commands are in sorted order:

[analogrelay]

Perhaps this is just because I added it to the list of commands last? I think the main fix here is that dnu help should sort by command name and not rely on the order of insertion into the command list.

[jmloeffler]

This seems like a good issue for someone like me, who is new to the project, to pick up and be productive while learning how everything fits together. I was thinking of implementing a IComparer and using it to sort the list prior to adding the commands to the StringBuilder in ShowHelp(). Does this seem reasonable? It's a bit side-affect-y since it would sort the list in place but structural solutions felt a little heavy for something that would only be used when ShowHelp() is called. I'd be happy to gist or pull-request what I'm proposing but figured it would be good to introduce myself and ask for guidance first, since this is my starter into the project.

[analogrelay]

Sure! Sounds good! Please feel free to send us a PR. Thanks for checking in with us beforehand.

Sounds like you're on the right track, you'd basically just be adjusting the order here: https://github.com/aspnet/dnx/blob/dev/src/Microsoft.Framework.CommandLineUtils.Sources/CommandLine/CommandLineApplication.cs#L387

I don't think a comparer is needed, just a .OrderBy(c => c.Name) or something :)

[jmloeffler]

Great suggestion. I was way overthinking it. :-)

[analogrelay]

Heh, no worries :)

[davidfowl]

Thanks for the PR @jmloeffler !