Get current consumer_group offset

mix.exs

@@ -14,15 +14,14 @@ defmodule KafkaexLagExporter.MixProject do
   # Run "mix help compile.app" to learn about applications.
   def application do
     [
-      extra_applications: [:logger]
+      extra_applications: [:logger],
+      mod: { KafkaexLagExporter, [] },
     ]
   end
 
   # Run "mix help deps" to learn about dependencies.
   defp deps do
     [
-      # {:dep_from_hexpm, "~> 0.3.0"},
-      # {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
       {:kafka_ex, "~> 0.12.1"},
     ]
   end