Expansion of User Guide

[btat]

The current user guide only lists the usage of certain cf cli commands.

We should add:

• end to end example use cases of using these commands
• more real world/advanced use cases
  • building custom buildpacks https://www.suse.com/media/guide/how_to_build_your_own_custom_buildpacks_guide.pdf
  • blue/green and canary deployments

[gaktive]

Also to be considered:

• autoscaler
• vcap services: how they work
• Credhub
• org & spaces permissions: how the sharing model works
• quotas
• debugging staging errors
• testing database connectivity

[btat]

Closing this for now due to resource limitations. Will revisit/reopen in the future when resources permit.