Trying to debug headers issue
Testing out a new header syntax
Header is now present, but doesn't match
Missing a bunch of params, but just found twilio's own validator
Use Sinatra conventions not Rails' ones
One last try for the night: Parse out query params.
Another last try for the night, back to my own validator
Another last try for the night: try without the query params
Took out removal of query params

- Twilio docs say to keep the query params. Their resultant signature
seems a lot shorter than what I’m generating though, so I’m wondering
if their process has actually changed, and I was reading old docs.
Emailed support.