A very useful tool:

Continuous integration with Travis CI

by Richel Bilderbeek

From the article:

In today’s guest post, Richel Bilderbeek gives us some insight about some the many possible advantages of setting up a continuous integration service, showing some minimal complete examples. Richel works as a PhD in Theoretical Biology at the University of Groningen industry, in his free time teaching people from ages 7-77 about C++, Processing, Arduino and R. Falling inexplicably in love with a C++ code snippet of Doom as a kid, he started using C++ only since 2001, and you can reach him through his website...