first pass at htmlwidget improvements

[timelyportfolio]

This pull includes a first pass at improvements to the htmlwidget interface for datacomb. Some noticeable changes:

• move R package stuff to ./pkg which will require the additional subdir="pkg" argument to devtools::install_github("cmpolis/datacomb,subdir="pkg") but allows us to separate the R stuff
• do some opinionated guessing to hopefully simplify usage on the part of the R user
• add some examples and documentation

see #1 for the full discussion and history

[cmpolis]

👍 👍 👍 Really appreciate this; thank you!

[timelyportfolio]

You've done all the hard work. Still a long way to go on the R side, but I love that with one-line an R user can make a datacomb, so we have a platform for iteration. Happy to make this the htmlwidget of the week when you think ready for the very little publicity that I can muster.

[cmpolis]

Haha, yeah, it's pretty remarkable you can get such a rich interface w/ just a single line of R; thanks again! I put in a few small updates, fixes, updated the dir structure, readme and did some cleanup tonight. I think things are in a pretty good state to share- feel free to publicize whenever you'd like!

[timelyportfolio]

Everything works great/better after your merge and changes. Will write a post this afternoon or tomorrow morning.