* Updates for Slack Notification changes

* Updates for Slack Notification changes

* ISY doc updates

* How to set sensor class

Add SleepIQ documentation

Ffmpeg component

* Add Simplepush docs

* Use the actual length for a device key

* Create notify.kodi.markdown

Initial documentation for kodi notification

* Update notify.kodi.markdown

cosmetic changes

* Update notify.kodi.markdown

* Update z-wave.markdown (#917)
- Notes added to Z-wave `soft-reset` about known issues by @sgauche 
- Fixed usage of `zwave` component, Z-Wave for references to a Z-Wave network, and OpenZWave as a project name by @sgauche

* Added documentation for manually adding a Yamaha AVR

* Update http.markdown

* Update http.markdown

* Added more content + documentation

* Update cover.markdown

* Update cover.markdown

Edit mqtt topic for spelling/grammar/typos/clarity.

Importantly, clarify what `certificate` is used for.  The current description implies it's used for encrypting communication, but that's what `client_key` and `client_cert` are for.  `certificate` is which root certificate(s) to trust.

* added docs for email sensor

* renamed to imap email content

* added missing file

* add bom_weather_current documentation

* wrong fork

* wrong fork

* update ha_release in documentation

* Create Component page for mysensors based HVAC

* Update climate.mysensors.markdown

* Update climate.mysensors.markdown

* Update climate.mysensors.markdown

* Update climate.mysensors.markdown