StyleSheet : Add documentation on stylesheet philosophy
StyleSheet : Add documentation on stylesheet philosophy

boberfly/gaffer,johnhaddon/gaffer,GafferHQ/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer,appleseedhq/gaffer,ImageEngine/gaffer,hradec/gaffer,appleseedhq/gaffer,lucienfostier/gaffer,johnhaddon/gaffer,andrewkaufman/gaffer,andrewkaufman/gaffer,ImageEngine/gaffer,andrewkaufman/gaffer,lucienfostier/gaffer,hradec/gaffer,johnhaddon/gaffer,johnhaddon/gaffer,GafferHQ/gaffer,hradec/gaffer,ImageEngine/gaffer,lucienfostier/gaffer,boberfly/gaffer,boberfly/gaffer,ImageEngine/gaffer,johnhaddon/gaffer,hradec/gaffer,boberfly/gaffer,GafferHQ/gaffer,GafferHQ/gaffer,appleseedhq/gaffer,lucienfostier/gaffer,appleseedhq/gaffer,andrewkaufman/gaffer,hradec/gaffer