Updating Readme

Added full URI to parse haproxy stats

plugins/inputs/haproxy/Readme.md

@@ -0,0 +1,15 @@
+# Telegraf plugin: Haproxy
+
+#### Configuration
+
+```toml
+ [[inputs.haproxy]]
+#   ## An array of address to gather stats about. Specify an ip on hostname
+#   ## with optional port. ie localhost, 10.10.3.33:1936, etc.
+#
+#   ## If no servers are specified, then default to 127.0.0.1:1936
+#   servers = ["http://myhaproxy.com:1936/;csv", "http://anotherhaproxy.com:1936/;csv"]
+    servers = ["http://localhost:8080/haproxy?stats;csv"]
+```
+
+URI will be different for each server. Plugin doesn't modify it when it queries to Haproxy stats webpage.