* Clarify how to use scan_interval
Many forum posts and issues ask how to change the scan_interval for modbus sensor.
This patch clarify the configuration parameters.
* Fix typos and add example
* There are more options
* Add support of modbus input registers query
Documentation updated according pull request.
Add support of modbus input registers query
* Update sensor.modbus.markdown
Removed some extra space.
* Update according main PR change
config option name was changed.