#62: update requests in place plus add tests
#62: temporary agent that schedules both a reading and an image every 1 minute
- the call to /api/device/next pops it off the queue
I broke this in commit 3890bac82dab0da55d54cbaeb5b2c77ce464f58d
#62: formatting
rebrand to Exterra Monitoring
add a reading endpoint that simply echoes what was posted
s#62: add an image endpoint and spit out the image in HTML for now