Update remote storage bridge README.md

documentation/examples/remote_storage/remote_storage_bridge/README.md

@@ -1,10 +1,13 @@
 # Remote storage bridge
 
-This is a bridge that receives samples in Prometheus's remote storage
-format and forwards them to Graphite, InfluxDB, or OpenTSDB. It is meant
+This is a bridge that receives samples via Prometheus's remote write
+protocol and stores them in Graphite, InfluxDB, or OpenTSDB. It is meant
 as a replacement for the built-in specific remote storage implementations
 that have been removed from Prometheus.
 
+For InfluxDB, this bridge also supports reading back data through
+Prometheus via Prometheus's remote read protocol.
+
 ## Building
 
 ```
@@ -13,10 +16,22 @@ go build
 
 ## Running
 
-Example:
+Graphite example:
 
 ```
-./remote_storage_bridge -graphite-address=localhost:8080 -opentsdb-url=http://localhost:8081/
+./remote_storage_bridge -graphite-address=localhost:8080
+```
+
+OpenTSDB example:
+
+```
+./remote_storage_bridge -opentsdb-url=http://localhost:8081/
+```
+
+InfluxDB example:
+
+```
+./remote_storage_bridge -influxdb-url=http://localhost:8086/ -influxdb.database=prometheus -influxdb.retention-policy=autogen
 ```
 
 To show all flags:
@@ -30,6 +45,11 @@ To show all flags:
 To configure Prometheus to send samples to this bridge, add the following to your `prometheus.yml`:
 
 ```yaml
+# Remote write configuration (for Graphite, OpenTSDB, or InfluxDB).
 remote_write:
-  url: "http://localhost:9201/receive"
+  - url: "http://localhost:9201/write"
+
+# Remote read configuration (for InfluxDB only at the moment).
+remote_read:
+  - url: "http://localhost:9201/read"
 ```