changes to Implementations wiki

[srerickson]

I'd like to update the entries on the implementations wiki concerning my projects: the library is now called ocfl-go and the gocfl cli has been removed from that repo. (I'll be sharing a new cli project soon, I hope!)

My suggestion:

- [ocfl-go](https://github.com/srerickson/ocfl-go) (Go, Seth Erickson, University of California, Santa Barbara)
    - [ocfl-index](https://github.com/srerickson/ocfl-index) storage root indexer based on ocfl-go.

Thank you!

[awoods]

@srerickson : Thanks for helping keep the list of resources current. You should have 'edit' permissions on the wiki. If you don't, please let me know.

Please feel free to make the changes directly.

[srerickson]

Thanks. I wasn't sure because there's a line at the top about opening an issue.