moved documentation to new repo (su2code/documentation)
moved logo and doxygen to documentation repo
Update solver_direct_mean.cpp

Heatflux computation fixed by using UnitNormal, rather than Normal
Merge pull request #78 from jvanoostrom/master

Bugfix Heatflux (correct pull request)
Normally we would want to merge both to and from develop (yours is from master), but since there's not much different I think this one is ok.