Update reference docs

[tzujenchanmbd]

The initial 2 commits in this PR simply copy-pasted from reference doc in google/transit.

Potential pending items before merging:

• Schedule
  • update changes in google/transit PR#464
  • links
• Realtime
  • Trip Modification images
  • links

[Sergiodero]

Thanks for working on this! I've just reviewed PR#464 in google/transit, maybe we can merge that one and then update this PR. What do you think?

As for the trip modification images, currently, Fred set up a script to pull the images from google/transit to GTFS.org, but there has been some small problems and it's not working 100% yet, so we probably need to bring them manually into the assets folder and then update each link so that the images render properly.

Also a question: which links specifically are you referring to?

Thanks again!

[tzujenchanmbd]

Thanks for the clarification!

PR#464merged, revision date updated - bcdd939
Added Trip Modification images - 0bc379c & 9e3ccd7

I was mentioning Trip Modification image or revision history links, other in-doc links should be okay. Could you review if the image can present properly? @Sergiodero

[Sergiodero]

Thanks @tzujenchanmbd! I can confirm that the images are working, they are quite big when displayed in large window but that's something we need to fix/coordinate with Fred.

I'm approving the changes