Removed unused imports in Cube.java, removed unsupported function in
Core.java (that broke the program) and added Sample.java to gitignore
Added W to vertices
Added color buffer
Added a vertex shader
Added a fragment shader
Added loadShader method
Added program initialization and attached the shaders to it
Moved the addVertices method content to init
Added a color VBO
Added glUseProgram and enabled index 1 for the vboc in the update method
Added cleaning up for the program,shaders and the color vbo
Fixed render problem, it was still set to 3 Components Vertices