Fixed static uppercase warning
Changed statics to uppercase
Merge pull request #50 from DavidPartouche/fix_warning

Fixed static uppercase warning
Fix warnings while compiling for win32
Fix bug with 64bits rustc
Add test for headless rendering
Fix win32 window not having a destructor in headless mode
Fix win32 window not closing when destroying it
Merge pull request #51 from tomaka/headless-test

Add test for headless rendering