Fixes for build-custom-app

[kelson42]

• Explain how to install ruby
• Explain how to install travis (the travis doc is big)
• Talk about "hash -r"
• Put a word about "kiwix-android-custom" that people know where to modify things
• zim_url and zim_content should be merged (in zim?)
• remove version_code fron info.json
• add httpslib2 in the deps
• add google-api-python-client in the deps
• add space before "if you found it"

[kelson42]

I have started to put improvments on the Wiki page.

[kelson42]

Putting in 3.0. I think all of this will become depracated one time the publication will be automated... but this has to be checked then

[kelson42]

@macgills Tell me when you start to define in detail the new worflow, those points are still valid imo. I guess many of the points are invalid as we have moved from Python to Kotlin/Gradle... but probably not all of them.

[kelson42]

@macgills Here is a reminder about this ticket as you are polishing new custom app publishing process.

[macgills]

I would say none of these points are still valid?

[kelson42]

@macgills The stuff with the version_code and version_name seems to be handled already with #36. But what about merging zim_url and zim_file (they can be contradictory) and are confusing!?

[macgills]

We only need zimUrl, zimFile doesn't exist. If we need a zimFile (eg when uploading an expansion file) we download it during the build process.
We do not support embedded zims at this time. Pending the necessary update to kiwixlib we can enhance the solution

[ghost]

This issue was moved by kelson42 to kiwix/kiwix-android-custom#40.