In this project I'm using RStudio.

I'm surprised with the functionalities. Try it to!

https://www.rstudio.com/

You can learn more about package authoring with RStudio at:

http://r-pkgs.had.co.nz/

Some useful keyboard shortcuts for package authoring:

Build and Reload Package: 'Ctrl + Shift + B'

Check Package: 'Ctrl + Shift + E'

Test Package: 'Ctrl + Shift + T'