Add Foscam IP Camera Pan, Tilt, Zoom Control Cookbook

Mentioned in PR290 (https://github.com/balloob/home-assistant.io/pull/290)
Moving this PR from the Foscam component to a Cookbook page.
Posted this example to Gitter: https://gitter.im/balloob/home-assistant?at=56e10e516fde057c26856411

Foscam supports commands including Motion Detection Activation and Pan/Tilt/Zoom to be send via cURL. Added an example of this, but these could be used in any number of ways. I'm open to making the example less verbose, if there's any thought that something could be taken out, but I think this would be helpful for other Foscam users, as HA can control almost everything about the camera via the cURL commands.

source/_cookbook/foscam_away_mode_PTZ.markdown

@@ -0,0 +1,60 @@
+---
+layout: page
+title: "Foscam Recording during Away Mode Only using Pan/Tilt/Zoom Control and Motion Detection"
+description: "Example of how to set Foscam to only have Motion Detection Recording while no one is home. When users are home the Foscam will indicate it is not recording by pointing down and away from users"
+date: 2016-03-10 13:05
+sidebar: true
+comments: false
+sharing: true
+footer: true
+ha_category: Automation Examples
+---
+This requires a [Foscam IP Camera](/components/camera.foscam/) camera with PTZ (Pan, Tilt, Zoom) and CGI functionality ([Source](http://www.ipcamcontrol.net/files/Foscam%20IPCamera%20CGI%20User%20Guide-V1.0.4.pdf)) 
+
+Foscam Cameras can be controlled by Home Assistant through a number of CGI commands. 
+The following outlines examples of the switch, services, and scripts required to move between 2 preset destinations while controlling motion detection, but many other options of movement are provided in the Foscam CGI User Guide linked above.
+
+The `switch.foscam_motion` will control whether the motion detection is on or off. This switch supports `statecmd`, which checks the current state of motion detection.
+```yaml
+# Replace admin and password with an "Admin" priviledged Foscam user
+# Replace ipaddress with the local IP address of your Foscam
+switch:
+ platform: command_line
+ switches:
+   #Switch for Foscam Motion Detection
+   foscam_motion:
+     oncmd: 'curl -k "https://ipaddress:443/cgi-bin/CGIProxy.fcgi?cmd=setMotionDetectConfig&isEnable=1&usr=admin&pwd=password"'
+     offcmd: 'curl -k "https://ipaddress:443/cgi-bin/CGIProxy.fcgi?cmd=setMotionDetectConfig&isEnable=0&usr=admin&pwd=password"'
+     statecmd: 'curl -k --silent "https://ipaddress:443/cgi-bin/CGIProxy.fcgi?cmd=getMotionDetectConfig&usr=admin&pwd=password" | grep -oP "(?<=isEnable>).*?(?=</isEnable>)"'
+     value_template: '{{ value == "1" }}'
+ ```
+ 
+ The service `shell_command.foscam_turn_off` sets the camera to point down and away to indicate it is not recording, and `shell_command.foscam_turn_on` sets the camera to point where I'd like to record. h of these services require preset points to be added to your camera. See source above for additional information.
+ ```yaml
+ shell_command:
+   #Created a preset point in Foscam Web Interface named Off which essentially points the camera down and away
+   foscam_turn_off: 'curl -k "https://ipaddress:443/cgi-bin/CGIProxy.fcgi?cmd=ptzGotoPresetPoint&name=Off&usr=admin&pwd=password"'
+   #Created a preset point in Foscam Web Interface named Main which points in the direction I would like to record
+   foscam_turn_on: 'curl -k "https://ipaddress:443/cgi-bin/CGIProxy.fcgi?cmd=ptzGotoPresetPoint&name=Main&usr=admin&pwd=password"'
+ ```
+ The `script.foscam_off` and `script.foscam_on` can be used to set the motion detection appropriately, and then move the camera. These scripts can be called as part of an automation with `device_tracker` triggers to set `home` and `not_home` modes for your Foscam and disable motion detection recording while `home`.
+```yaml
+script:
+ foscam_off:
+   sequence:
+   - execute_service: switch.turn_off
+     service_data:
+       entity_id: switch.foscam_motion
+   - service: shell_command.foscam_turn_off
+ foscam_on:
+   sequence:
+   - execute_service: switch.turn_off
+     service_data:
+       entity_id: switch.foscam_motion
+   - service: shell_command.foscam_turn_on
+   - execute_service: switch.turn_on
+     service_data:
+       entity_id: switch.foscam_motion
+```
+
+I'm working on the `automation` component to be used to set when `home` and `not_home`