Writing good documentation is hard work 🙂

• The main Shashin page now contains detailed documentation for installing and using Shashin 3 (the beta version is currently available at GitHub).
• I modified the Shashin 3 progress status page so it is now a demo page, with working examples of the new Shashin 3 shortcodes.
• I created a new, temporary page for the Shashin 2 documentation, since it is still available for download at wordpress.org (I’ll replace it with Shashin 3 when beta testing is complete, in about a week).