The function helloWorld is a sleek and modern hello world function.
Install latest development release from Github
install.packages("devtools")
require(devtools)
install_github("helloWorld", "dbetebenner")
require(helloWorld)
To install from Github you might need: Windows: Rtools (http://cran.r-project.org/bin/windows/Rtools/), OS X: xcode (from the app store), Linux: apt-get install r-base-dev (or similar).