I'm personally a big fan of doing something like what the Warlock solo community have done.
https://docs.google.com/spreadsheet/...&rm=full#gid=0
Using Google Spreadsheets will let you set up categories (such as classes, and then you can add subcategories such as Resources, Auras, etc...), add trusted editors and if you couple it with something like pastebin or github gists you can easily get plaintext strings for users to import.
You can add pictures to preview too, either as just a link or as an actual part of the spreadsheet.
See here:
https://docs.google.com/spreadsheet/...qcndXeXc#gid=6