Added clarification on 'northdirection' that it has to do with viewpoint angle
It helps if we print the error message
Add explanation about HTTPS
Merge pull request #980 from tswsl1989/https-explanation

Add explanation about HTTPS
Merge pull request #981 from tswsl1989/pngit

It helps if we print the error message
Merge pull request #977 from jandahl/patch-1

Added clarification on 'northdirection' that it has to do with viewpoint...
Merge branch 'upstream'