Fix #4 and is almost an middle step to #8
Improve the concat function and create a makefile for travis
Updating Makefile
Change space for tabs
Removing dependecies with glut
Fix build file
Changing makefile
Making the example more OS agnostic
including gl.h and glu.h to linux and windows
Fix gl.h, glu.h and glut.h includings
Adding freeglut to build
Improve .travis.yml to install freeglut
Fix before_install statement
remove unecessary commas
Adding support to C11
Trying fix C11 parameter
Trying fix C11 parameter
Trying fix C11 parameter
Using C90 because Travis GCC cant update to newer version than 4.6
Using C99 because Travis GCC cant update to newer version than 4.6