More links to twilio-python client / REST API?

[vmdx]

In the SMS workshop, I feel like students may just feel like they are copy-pasting code. I think it may be useful to sprinkle more links to the twilio-python docs / REST API docs so that students will see where the code is coming from and how to expand on it further. I can handle this if you think it's a good idea!

For example:

To do this, phone numbers will be added to a set and checked before each vote is tallied.
if msg.from_ in voted:
continue

could be, instead:

To do this, the voting phone numbers (accessed through the from_ attribute) will be added to a set and checked before each vote is tallied.

[kyleconroy]

This is a very good idea.