Add EditorConfig file
Added HyperWind's error art
Have Travis retry the wad command if it fails
Merge pull request #169 from NuckChorris/improve-travis-reliability

Have Travis retry the wad command if it fails
Merge pull request #161 from NuckChorris/add-editorconfig

Add EditorConfig file
Added optional artist credit to error pages.

+ Added Snagret's error art