Add information about computing resources and environment for exoplanet research

[eacharles]

We should either add information to this page: https://github.com/KIPAC/BootCamp/blob/master/docs/exoplanets.md

Or edit the link in this page to point at such information: https://github.com/KIPAC/BootCamp/blob/master/docs/Getting_Started.md

[eacharles]

I move the top level page from the link above to here: https://github.com/KIPAC/BootCamp/blob/master/README.md So if you want to point at information somewhere, please edit that link.