Challenge: Display simple triangle

[Freakazo]

Okay so we've gotten a couple of new members over the couple of days, so I thought that creating a small "challenge" we all should do individually to get acquainted/ more comfortable with the current build system and the (barely any) existing codebase.

To new members: read some of the other posts made in this group, in particular the game idea, irc chat meetup (the summary posted near the end) and also have a read over the existing code and build scripts. We might have another meeting on the weekend, keep up to date with the new IRC chat meetup thread.

The challenge is to display a simple triangle, using the opengl3.2+ API. 

This small challenge should be done in a new branch (git checkout -b challangeBranch) so that in case that there are any possible improvements made to the engine that they will be separate from your testing code. In otherwords if you make an improvement to the game engine git checkout master, add the changes, git checkout challangeBranch  then git merge master.

Remember to do a pull request/ commit changes after improvements are made. (For example adding the callback to glfw for when the window is attempted to be closed among others)