Dx 468 (#366)
Dx 468 (#366)

* first update to the sign up page

* added the SDKs to the bottom of the page

ted-spence-avalara/developer-dot,mlsnyder/developer-dot,mlsnyder/developer-dot,mlsnyder/developer-dot,bob-erdman/developer-dot,bob-erdman/developer-dot,ted-spence-avalara/developer-dot,bob-erdman/developer-dot,bob-erdman/developer-dot,benfjohnson/developer-dot,benfjohnson/developer-dot,mlsnyder/developer-dot,ted-spence-avalara/developer-dot,benfjohnson/developer-dot,mlsnyder/developer-dot,bob-erdman/developer-dot,ted-spence-avalara/developer-dot,ted-spence-avalara/developer-dot,benfjohnson/developer-dot,benfjohnson/developer-dot