`flourish new` should include sample CSV files

[annapowellsmith]

Based on this conversation plus my own experience, it would be very helpful to include sample CSV files and show how to render them in the default template skeleton generated by flourish new.

A couple of other suggested improvements:

• I think the code comments might be out of date.
• A comment in the skeleton HTML file to explain how the JS gets automagically included
• A comment to explain the options for including third-party javascript files

See also #35 (but I suggest we do this in the default).

[theduncanclark]

Couldn't agree more with this! I can only think of one template (photo slider) with no data tables, so seems weird to oblige all new template devs to work out how the (not very intuitive) data bindings/tables work.

Could be changed in the default or done as part of https://github.com/kiln/flourish-sdk/issues/16

I also think we should have a skeleton with flourish-layout so stuff like title, background, footer, etc, is all taken care of. See: https://github.com/kiln/flourish/issues/2044