Update build lifecycle docs

[troyswanson]

Updates the documentation to reflect the current lifecycle for builds. Also tries to offer examples for what types of commands to run during the various hooks. This is my best guess based on my interpretation of the code, but I'm open to being wrong about any of this. Here's the new copy:

1. Clone project repository from GitHub
2. cd to clone directory
3. Checkout commit for this build
4. Run before_install commands
   • Use this to prepare the system to install prerequisites or dependencies
   • e.g. sudo apt-get update
5. Run install commands
   • Use this to install any prerequisites or dependencies necessary to run your build
6. Run before_script commands
   • Use this to prepare your build for testing
   • e.g. copy database configurations, environment variables, etc.
7. Run test script commands
   • Default is specific to project language
   • All commands must exit with code 0 on success. Anything else is considered failure.
8. Run after_success or after_failure commands
9. Run after_script commands

And here's a screenshot of what it looks like:

Feel free to let me know what you think!

Ref #239

[roidrage]

❤️

Thank you!

[nschonni]

I like it! Would it look OK without those list CSS overrides?

[joshk]

This looks good to me, @roidrage your thoughts?

[troyswanson]

@nschonni Not really. I'll comment on the diff...

[troyswanson]

Anyone have any more thoughts on this? I would love for it to be merged. 😄

[roidrage]

@troyswanson thanks so much for the updated docs!

[troyswanson]

Any time! 👍