Add usage and configuration to README

README.md

@@ -2,6 +2,62 @@
 
 This project adds a basic high availability layer to InfluxDB. With the right architecture and disaster recovery processes, this achieves a highly available setup. It will be available with the 0.12.0 release of InfluxDB in April 2016.
 
+## Usage
+
+To build from source and run:
+
+```sh
+$ # Install influxdb-relay to your $GOPATH/bin
+$ go install github.com/influxdata/influxdb-relay
+$ # Edit your configuration file
+$ cp $GOPATH/github.com/influxdata/influxdb-relay/sample.toml ./relay.toml
+$ vim relay.toml
+$ # Start relay!
+$ $GOPATH/influxdb-relay -config relay.toml
+```
+
+## Configuration
+
+```toml
+[[http]]
+# Name of the HTTP server, used for display purposes only.
+name = "example-http"
+
+# TCP address to bind to, for HTTP server.
+bind-addr = "127.0.0.1:9096"
+
+# Array of InfluxDB instances to use as backends for Relay.
+output = [
+    # name: name of the backend, used for display purposes only.
+    # location: full URL of the /write endpoint of the backend
+    # timeout: Go-parseable time duration. Fail writes if incomplete in this time.
+    { name="local1", location="http://127.0.0.1:8086/write", timeout="10s" },
+    { name="local2", location="http://127.0.0.1:7086/write", timeout="10s" },
+]
+
+[[udp]]
+# Name of the UDP server, used for display purposes only.
+name = "example-udp"
+
+# UDP address to bind to.
+bind-addr = "127.0.0.1:9096"
+
+# Socket buffer size for incoming connections.
+read-buffer = 0 # default
+
+# Precision to use for timestamps
+precision = "n" # Can be n, u, ms, s, m, h
+
+# Array of InfluxDB instances to use as backends for Relay.
+output = [
+    # name: name of the backend, used for display purposes only.
+    # location: host and port of backend.
+    # mtu: maximum output payload size
+    { name="local1", location="127.0.0.1:8089", mtu=512 },
+    { name="local2", location="127.0.0.1:7089", mtu=1024 },
+]
+```
+
 ## Description
 
 The following is a proposed architecture for the project. This may get more fleshed out and fully featured as it develops as part of the InfluxDB 0.12.0 development cycle.

main.go

@@ -18,7 +18,7 @@ func main() {
 	flag.Parse()
 
 	if *configFile == "" {
-		fmt.Fprintln(os.Stderr, "Missing configufation file")
+		fmt.Fprintln(os.Stderr, "Missing configuration file")
 		flag.PrintDefaults()
 		os.Exit(1)
 	}