Fixed mix compilation

Copied default config from app.src

Author: okayno14

mix.exs

@@ -9,8 +9,18 @@ defmodule ObserverCli.MixProject do
       description: "observer in shell",
       deps: [
         {:recon, "~> 2.5.6"}
-      ],
+      ]
+    ]
+  end
+
+  def application do
+    [
       env: [
+        # {:formatter, #{
+        # :application => atom(), - Formatter application. observer_cli loads all it's modules to remote node.
+        # :mod => module() - observer_cli_formatter implementation.
+        # }}
+        formatter: %{application: :observer_cli, mod: :observer_cli_formatter_default},
         # scheduler_usage: :enable, # default value is 'disable', uncomment to enable by default
         plugins: [
           # module       - Specific module implements plugin behavior. It's mandatory.
@@ -24,5 +34,5 @@ defmodule ObserverCli.MixProject do
         ]
       ]
     ]
-  end
+    end
 end