Add explicit CV data import

This version

• explicitly imports CV data from an excel spreadsheet in the templates
• adds a convenience function that downloads all sheets in a google sheet as a single excel file

First official version

Hi all,

This is the first 'real' release where I've taken the time to make my R Markdown templates for academic CVs usable for others than myself.

I've done so by revisiting each main template, and then turn the whole thing into an R package that you can install to have the templates easily available within RStudio (or an R console, for that matter).

This version has three templates:

• Academic CV (paged)
• 2-column CV (paged)
• Website CV

I've also documented how to manually add pagebreaks, as fiddling around with this is sometimes required for the paged templates (pagedown, which under the hood is used to create paged output, is still early in its development!).

Enjoy!