Fix a CMake error.
Made CREDITS a markdown file.
Formatted the icon/ICON file.
Renamed icon/ICON to a Markdown file.
Removed useless stuff.
Deleted more useless stuff.
Recreated lib/src.
Reformatted CREDITS as a Markdown file.
Added a modification to the Apache License.
Small tweaks.
Changed all of the header comments to reflect the license change.