Use a custom setup script to check for the dependencies and pass along
the required compile flags to the module; also split the object
definitions for the target modules from their source so as to allow
#including them.
* Change Temperature usermod to use async reading to avoid blocking
* Fix comparison on wait time
* Add
* Simplify logic in the loop method
* Optimize calls to minimize latency, inform user how long till first measurement
* disable usermod if sensor not found
* Added debug statements on init, update readme
* fix spelling error of celsius
Will Miles