README update and missing dependencies.

vendor/gitlab.com/pztrn/flagger/example/main.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"gitlab.com/pztrn/flagger"
+)
+
+var f *flagger.Flagger
+
+func main() {
+	f = flagger.New("testprogram", nil)
+	f.Initialize()
+	f.AddFlag(&flagger.Flag{
+		Name:         "testflag",
+		Description:  "Just a test flag",
+		Type:         "bool",
+		DefaultValue: false,
+	})
+	f.Parse()
+}