Added octoprint documentation (#448)

source/_components/binary_sensor.octoprint.markdown

@@ -0,0 +1,33 @@
+---
+layout: page
+title: "OctoPrint Binary Sensor"
+description: "Instructions how to integrate OctoPrint binary sensors within Home Assistant."
+date: 2016-05-05 08:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: octoprint.png
+ha_category: Binary Sensor
+---
+
+
+The `OctoPrint` binary sensor platform let you monitor if your 3D printer is printing or if there was a printing error.
+
+To set it up, add the following information to your `configuration.yaml` file:
+
+```yaml
+binary_sensor:
+  platform: octoprint
+  monitored_conditions:
+    - Printing
+    - Printing Error
+```
+
+Configuration variables:
+
+- **monitored_conditions** array (*Required*): States to monitor.
+  - Printing
+  - Printing Error
+
+<p class='note'>You must have the [OctoPrint component](/components/octoprint/) configured to use this sensor.</p>

source/_components/octoprint.markdown

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+---
+layout: page
+title: "OctoPrint"
+description: "Instructions how to setup the OctoPrint in Home Assistant."
+date: 2015-01-20 22:36
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: octoprint.png
+ha_category: Hub
+featured: true
+---
+
+[OctoPrint](http://octoprint.org/) is a web interface for your 3D printer. This is the main component to integrate OctoPrint sensors, you will have to setup sensors and binary sensors separately.
+
+To get started with the OctoPrint API, please follow the directions on their [site](http://docs.octoprint.org/en/master/api/general.html). Once OctoPrint is configured you will need to add your API key and host to your configuration.yaml. 
+
+
+```yaml
+octoprint:
+  host: http://YOUR_OCTOPRINT_HOST
+  api_key: YOUR_API_KEY
+```
+
+Configuration variables:
+
+- **api_key** (*Required*): The retrieved api key.
+- **host** (*Required*): The octoprint host.

source/_components/sensor.octoprint.markdown

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+---
+layout: page
+title: "OctoPrint Sensor"
+description: "Instructions how to integrate OctoPrint sensors within Home Assistant."
+date: 2016-05-05 08:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: octoprint.png
+ha_category: Sensor
+---
+
+
+The `OctoPrint` sensor platform let you monitor various states of your 3D printer and its print jobs.
+
+To set it up, add the following information to your `configuration.yaml` file:
+
+```yaml
+sensor:
+  platform: octoprint
+  monitored_conditions:
+    - Current State
+    - Temperatures
+    - Job Percentage
+```
+
+Configuration variables:
+
+- **monitored_conditions** array (*Required*): States to monitor.
+  - Current State (Text of current state)
+  - Temperatures (Temperatures of all available tools)(print head, print bed, ...) These will be displayed as tool0, tool1, ... please refer to your OctoPrint frontend to associate tool number with actual device.
+  - Job Percentage
+
+<p class='note'>You must have the [OctoPrint component](/components/octoprint/) configured to use this sensor.</p>