Add link to rtlamr-collect.

README.md

@@ -3,6 +3,8 @@ Utilities often use "smart meters" to optimize their residential meter reading i
 
 This project is a software defined radio receiver for these messages. We make use of an inexpensive rtl-sdr dongle to allow users to non-invasively record and analyze the commodity consumption of their household.
 
+There's now experimental support for data collection and aggregation with [rtlamr-collect](https://github.com/bemasher/rtlamr-collect)!
+
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