Create about_libraries_def.xml

Allows AboutLibraries (https://github.com/mikepenz/AboutLibraries) to autodetect the usage of this library and show it on a dialog.
Update about_libraries_def.xml

Same Indent (tab) at all rows, author website changed to github.
Update about_libraries_def.xml

Missing > added
Merge pull request #57 from kashban/patch-1

Create about_libraries_def.xml