GLTools static library now builds sucessfully
Changed GLTools -> framework
premake4.lua and corresponding make files now working for
both framework and tutorial1 projects.
removed unused files
Added tutorial2
FragPosition program now works
VertexColors progrmam now works
Create Tutorial3
Created custom premake4 file within tutorial3 dir which is ran
from parent premake4.lua script.
Added fragChangeColor
      vertPositionOffset
      vertCalcOffset
programs to tutorial3
Added vertCalcOffset_Remixed which creates more triangles by
pressing 'a', less with 's'.

Updated FragPosition to use windowHeight uniform for frag shading.
Merge branch 'master' of github.com:dustin-biser/OpenGLTutorials