Add documentation for the new Ecovacs (Deebot) component and vacuum (#5922)

* Add documentation for the new Ecovacs (Deebot) component and vacuum

* Copy paste error fix

* Typo fix and template improvements

From PR review

source/_components/ecovacs.markdown

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+---
+layout: page
+title: "Ecovacs"
+description: "Instructions on how to integrate Ecovacs vacuums within Home Assistant."
+date: 2018-07-29 09:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: ecovacs.png
+ha_category: Hub
+ha_iot_class: "Cloud Push"
+ha_release: 0.75
+---
+
+The `ecovacs` component is the main component to integrate all [Ecovacs](https://www.ecovacs.com) (Deebot) vacuums. You will need your Ecovacs account information (username, password) to discover and control vacuums in your account.
+
+Please see the [Ecovacs Vacuum](/components/vacuum.ecovacs/) documentation for more information about using the vacuum entity.
+
+## {% linkable_title Configuration %}
+
+To add your Ecovacs devices into your Home Assistant installation, add the following to your `configuration.yaml` file:
+
+```yaml
+ecovacs:
+  username: YOUR_ECOVACS_USERNAME
+  password: YOUR_ECOVACS_PASSWORD
+  country: YOUR_TWO_LETTER_COUNTRY_CODE
+  continent: YOUR_TWO_LETTER_CONTINENT_CODE
+```
+
+{% configuration %}
+username:
+  description: Your username to login to your Ecovacs account.
+  required: true
+  type: string
+password:
+  description: Your password to login to your Ecovacs account.
+  required: true
+  type: string
+country:
+  description: Your two-letter country code (us, uk, etc).
+  required: true
+  type: string
+continent:
+  description: Your two-letter continent code (na, eu, etc).
+  required: true
+  type: string
+{% endconfiguration %}
+
+Note: For some countries, you will need to set `continent` to `ww` (meaning worldwide.) There is unfortunately no way to know the correct settings other than guessing and checking. See the [sucks library protocol documentation](https://github.com/wpietri/sucks/blob/master/protocol.md) for more information about what has been figured out about the Ecovacs servers.
+
+### {% linkable_title Stability and Reporting Bugs %}
+
+The library that talks to the Ecovacs servers is in a very early state and still under development. As such, it is likely that not all regions and devices will work at the current time.
+
+Please see the [sucks library documentation](https://github.com/wpietri/sucks) for some more information about what has been tested, and check out the GitHub issues to see if the issue you're having is known or being worked on.
+
+If you have an issue with the Ecovacs component, please file a [GitHub Issue](https://github.com/home-assistant/home-assistant/issues) and include your Home Assistant logs in the report. To get full debug output from both the Ecovacs component and the underlying `sucks` library, place this in your `configuration.yaml` file:
+
+```yaml
+logger:
+  logs:
+    homeassistant.components.ecovacs: debug
+    homeassistant.components.vacuum.ecovacs: debug
+    sucks: debug
+```
+
+Warning: doing this will cause your authentication token to visible in your log files. Be sure to remove any tokens and other authentication details from your log before posting them in an issue.

source/_components/vacuum.ecovacs.markdown

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+---
+layout: page
+title: "Ecovacs Deebot Vacuum"
+description: "Instructions on how to setup Ecovacs Deebot vacuums within Home Assistant."
+date: 2018-07-27 09:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: ecovacs.png
+ha_category: Vacuum
+ha_iot_class: "Cloud Push"
+ha_release: 0.75
+---
+
+The `ecovacs` vacuum platform allows you to monitor and control your Ecovacs Deebot vacuums.
+
+You have first to setup the [Ecovacs component](/components/ecovacs/)
+
+### {% linkable_title Component Lifespans %}
+
+The remaining lifespan of components on your Deebot vacuum will be reported as attributes on the vacuum entity. The value will be a whole number representing the percentage of life remaining.
+
+Here's an example of how to extract the filter's lifespan to its own sensor using a [template sensor](/components/sensor.template/):
+
+{% raw %}
+```yaml
+# Example configuration.yaml entry
+sensor:
+  - platform: template
+    sensors:
+      vacuum_filter:
+        friendly_name: "Vacuum Filter Remaining Lifespan"
+        unit_of_measurement: '%'
+        value_template: "{{ state_attr('vacuum.my_vacuum_id', 'component_filter') }}"
+```
+{% endraw %}
+
+Or, if you want a simple binary sensor that becomes `On` when the filter needs to be replaced (5% or less):
+
+{% raw %}
+```yaml
+# Example configuration.yaml entry
+binary_sensor:
+  - platform: template
+    sensors:
+      vacuum_filter_replace:
+        friendly_name: "Vacuum Filter"
+        device_class: problem
+        value_template: "{{ state_attr('vacuum.my_vacuum_id', 'component_filter') <= 5 }}"
+```
+{% endraw %}
+
+### {% linkable_title Handling Errors %}
+
+The vacuum entity has an `error` attribute that will contain the _most recent_ error message that came from the vacuum. There is not a comprehensive list of all error messages, so you may need to do some experimentation to determine the error messages that your vacuum can send.
+
+If the vacuum fires a "no error" event, the `error` attribute will change back to `None`. Note, however, that this does not happen for all types of errors.
+
+Alternatively, you can use the `ecovacs_error` event to watch for errors. This event will contain a data payload that looks like:
+
+```json
+{
+  "entity_id": "vacuum.deebot_m80",
+  "error": "an_error_name"
+}
+```
+
+Finally, if a vacuum becomes unavailable (usually due to being idle and off its charger long enough for it to completely power off,) the vacuum's `status` attribute will change to `offline` until it is turned back on.