Samples do not instruct to clone code

[RichieEscarez]

With the content rendered in the website, we are now missing links or instructions about how to download the code source (or even view it).

We need to add a "Before you begin" section, or just ensure that there are instructions about how to clone the code from the repo so that its locally available.

Previously, all the sample readme's are written with the assumption that you are viewing them from the repo.

[rgregg]

I think the helloworld samples were written with the idea that you'd copy and paste from the doc. The other samples however definitely had that expectation.

[abrennan89]

This step does seem to exist for https://github.com/knative/docs/blob/master/docs/serving/samples/autoscale-go/README.md#prerequisites ?
Can we add a list of specific samples or docs this is missing from?

[mhamwala]

I'm happy to work on this?

[samodell]

That'd be great, @mhamwala !

[mhamwala]

Going to submit separate PR's for each component just to make it easier to review, I believe these are all the samples in Serving that need the extra clone instruction step ^

[RichieEscarez]

#1203 fixes 0.6 (and since it specifically refers to "release-0.6" it cannot be directly cherry-picked to 0.5 as originally intended)

[RichieEscarez]

Status update:
Other areas need to be investigated and instruction and links need to be added:

• Serving samples (DONE Samples reference yaml files that are next to the README file, but no link from website. #1324)
• Eventing (ie link to repo code samples from docs pages #1259)
• Build?
• Community samples (ie Community samples need to be updated for Serving 0.6 #1330)

Related: #1409 - Stop copying all code into README files and instead "include" a copy of the corresponding file (during website build)