Add some docs for SFx
@@ -6,6 +6,11 @@ This sink sends Veneur metrics to [SignalFx](https://signalfx.com/).
**This sink is experimental**. This sink does not yet provide all of the functionality that SignalFx allows. Some of Veneur's primitives still need to be mapped to those of SignalFx.
+# Configuration
+
+* `signalfx_api_key` to set the API key.
+* `signalfx_hostname` to adjust where metrics are sent. If you use a proxy or something in front of SignalFx's API this is the place!
+
# TODO
* Does not handle events correctly yet, only copies timestamp, title and tags
