Indy10 install instructions now added to GitHub Wiki

Due to a prior unexpected server shutdown, Indy’s installation instructions and documentation files were lost on Indy’s main website, existing only in various online archives.

Thanks to the efforts of David Cornelius, Indy 10’s installation instructions have now been added to Indy’s GitHub Wiki:

As documentation files are recovered, they will be added to the Wiki, too.  Eventually, the online documentation will likely be migrated to the Wiki, as well.