added migrated 2.x add-ons

Signed-off-by: Kai Kreuzer <kai@openhab.org>

bundles/org.openhab.binding.foobot/README.md

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+# Foobot Binding
+
+This binding fetches the Indoor Air Quality data of each of your Foobot devices from the Foobot cloud service.
+
+To use this binding, you first need to [register and get your API key](https://api.foobot.io/apidoc/index.html).
+The api is rate limited to 200 calls per day. If you need a higher rate limit please contact Foobot.
+
+## Supported Things
+
+The binding supports the following things:
+
+| Thing type  | Name
+|-------------|------------------------------------------
+| account     | The bridge with connection configuration
+| device      | The sensor thing
+
+## Discovery
+
+The binding requires you to have a Foobot account and an API key.
+The discovery process is able to automatically discover all devices associated with your Foobot account.
+
+## Bridge Configuration
+
+Bridge has the following configuration parameters:
+
+| Parameter        | Description                                           | Required
+|------------------|-------------------------------------------------------|----------
+| apikey           | API Key from https://api.foobot.io/apidoc/index.html  | Mandatory
+| username         | The e-mail address used to log into the Foobot App    | Mandatory
+| refreshInterval  | Refresh interval in minutes, minimal 5 minutes        | Optional, the default value is 8 minutes.
+
+The minimal refresh rate is 5 minutes because the device only sends data every 5 minutes.
+The default is 8 minutes. This will get you through the day with the default rate limit of 200 calls per day.
+
+## Channels
+
+The bridge has one channel:
+
+| Channel ID           | Item Type | Description
+|----------------------|-----------|-----------------------------------------------
+| apiKeyLimitRemaining | Number    | The remaining number of API requests for today
+
+
+The AirQuality sensors information that is retrieved is available as these channels:
+
+| Channel ID        | Item Type            | Description
+|-------------------|----------------------|---------------------------------------------
+| time              | DateTime             | Last time the sensor data was send to Foobot
+| pm                | Number:Density       | Particulate Matter level (ug/m3)
+| temperature       | Number:Temperature   | Temperature in Celsius or Fahrenheit
+| humidity          | Number:Dimensionless | Humidity level (%)
+| co2               | Number:Dimensionless | Carbon diOxide level (ppm)
+| voc               | Number:Dimensionless | Volatile Organic Compounds level (ppb)
+| gpi               | Number:Dimensionless | Global Pollution index (%)
+
+## Full Example
+
+demo.things:
+
+```
+// Bridge configuration:
+Bridge foobot:account:myfoobotaccount "Foobot Account" [apiKey="XXXXXX", username="XXXXXX", refreshInterval=8] {
+  Things:
+    device myfoobot "Foobot sensor" [uuid="XXXXXXXXXXXXXXXX"]
+```
+
+demo.items:
+
+```
+Number:Temperature Temperature "Temperature" <temperature> { channel="foobot:myfoobotaccount:device:myfoobot:temperature" }
+```