Modernize invertergui: MQTT write support, HA integration, UI updates

vendor/github.com/jessevdk/go-flags/README.md

@@ -1,7 +1,7 @@
 go-flags: a go library for parsing command line arguments
 =========================================================
 
-[![GoDoc](https://godoc.org/github.com/jessevdk/go-flags?status.png)](https://godoc.org/github.com/jessevdk/go-flags) [![Build Status](https://travis-ci.org/jessevdk/go-flags.svg?branch=master)](https://travis-ci.org/jessevdk/go-flags) [![Coverage Status](https://img.shields.io/coveralls/jessevdk/go-flags.svg)](https://coveralls.io/r/jessevdk/go-flags?branch=master)
+[![GoDoc](https://godoc.org/github.com/jessevdk/go-flags?status.png)](https://godoc.org/github.com/jessevdk/go-flags)
 
 This library provides similar functionality to the builtin flag library of
 go, but provides much more functionality and nicer formatting. From the
@@ -78,6 +78,9 @@ var opts struct {
 
 	// Example of a map
 	IntMap map[string]int `long:"intmap" description:"A map from string to int"`
+
+	// Example of env variable
+	Thresholds  []int     `long:"thresholds" default:"1" default:"2" env:"THRESHOLD_VALUES"  env-delim:","`
 }
 
 // Callback which will invoke callto:<argument> to call a number.