Configure GitHub for Rstudio

github.R

#### 1. Sign up at GitHub.com ################################################

## If you do not have a GitHub account, sign up here:
## https://github.com/join

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#### 2. Install git ##########################################################

## If you do not have git installed, please do so: 
## Windows ->  https://git-scm.com/download/win
## Mac     ->  https://git-scm.com/download/mac
## Linux   ->  https://git-scm.com/download/linux
##             or: $ sudo dnf install git-all

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### 3. Configure git with Rstudio ############################################

## set your user name and email:
usethis::use_git_config(user.name = "YourName", user.email = "your@mail.com")

## create a personal access token for authentication:
usethis::create_github_token() 
## in case usethis version < 2.0.0: usethis::browse_github_token() (or even better: update usethis!)

## Note for Linux users:
## credentials::set_github_pat() (in line 34) might store your PAT in a memory cache that
## expires after 15 minutes or when the computer is rebooted. You thus may wish to do 
## extend the cache timeout to match the PAT validity period:
usethis::use_git_config(helper="cache --timeout=2600000") #> cache timeout ~30 days

## set personal access token:
credentials::set_github_pat("YourPAT")

## or store it manually in '.Renviron':
usethis::edit_r_environ()
## store your personal access token in the file that opens in your editor with:
## GITHUB_PAT=xxxyyyzzz
## and make sure '.Renviron' ends with a newline

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#### 4. Restart R! ###########################################################

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#### 5. Verify settings ######################################################

usethis::git_sitrep()

## Your username and email should be stated correctly in the output. 
## Also, the report shoud cotain something like:
## 'Personal access token: '<found in env var>''

## If you are still having troubles, read the output carefully.
## It might be that the PAT is still not updated in your `.Renviron` file.
## Call `usethis::edit_r_environ()` to update that file manually.

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## THAT'S IT!

Thanks @grady, I have updated the snippet aaccordingly.