Add credo to rpi3 dev env i guess

.travis.yml

@@ -40,7 +40,6 @@ script:
 - mix local.hex --force
 - mix local.rebar --force
 - mix archive.install https://github.com/nerves-project/archives/raw/master/nerves_bootstrap.ez --force
-- mix archive.install hex credo --force
 - mix deps.get
 - mix credo --strict --ignore Credo.Check.Readability.MaxLineLength
 - mix firmware

mix.exs

@@ -101,13 +101,13 @@ defmodule Farmbot.Mixfile do
       {:nerves_ssdp_server, "~> 0.2.2", only: [:dev, :test]},
       {:nerves_ssdp_client, "~> 0.1.0", only: [:dev, :test]},
 
-      {:ex_syslogger, "~> 1.4", only: :prod}
+      {:ex_syslogger, "~> 1.4", only: :prod},
+      {:credo, "~> 0.8", only: [:dev, :test], runtime: false},
     ]
   end
 
   defp deps("host") do
     [
-      {:credo, "~> 0.8", only: [:dev, :test], runtime: false},
       {:ex_doc, "~> 0.17", only: :dev},
       {:inch_ex, ">= 0.0.0", only: :dev},
       {:excoveralls, "~> 0.6", only: :test},

mix.lock.rpi3

@@ -2,12 +2,14 @@
   "amqp_client": {:hex, :amqp_client, "3.6.12", "dfdfe7be661feb96ece404092a47431a73797ad412959732d940f96f80290da0", [], [{:rabbit_common, "3.6.12", [hex: :rabbit_common, repo: "hexpm", optional: false]}], "hexpm"},
   "base64url": {:hex, :base64url, "0.0.1", "36a90125f5948e3afd7be97662a1504b934dd5dac78451ca6e9abf85a10286be", [], [], "hexpm"},
   "bootloader": {:hex, :bootloader, "0.1.2", "835ddcf50b796714658f342061d5d48ebc34cbd0d81cdbd5a5a8ae00705d72b1", [], [{:distillery, "~> 1.0", [hex: :distillery, repo: "hexpm", optional: false]}], "hexpm"},
+  "bunt": {:hex, :bunt, "0.2.0", "951c6e801e8b1d2cbe58ebbd3e616a869061ddadcc4863d0a2182541acae9a38", [], [], "hexpm"},
   "certifi": {:hex, :certifi, "2.0.0", "a0c0e475107135f76b8c1d5bc7efb33cd3815cb3cf3dea7aefdd174dabead064", [], [], "hexpm"},
   "combine": {:hex, :combine, "0.10.0", "eff8224eeb56498a2af13011d142c5e7997a80c8f5b97c499f84c841032e429f", [], [], "hexpm"},
   "connection": {:hex, :connection, "1.0.4", "a1cae72211f0eef17705aaededacac3eb30e6625b04a6117c1b2db6ace7d5976", [], [], "hexpm"},
   "cors_plug": {:hex, :cors_plug, "1.4.0", "c1c4fb68adf2fd1b4caccee978663edd58f62881627ab65b52ff56146945687f", [], [{:plug, "> 0.14.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},
   "cowboy": {:hex, :cowboy, "1.1.2", "61ac29ea970389a88eca5a65601460162d370a70018afe6f949a29dca91f3bb0", [], [{:cowlib, "~> 1.0.2", [hex: :cowlib, repo: "hexpm", optional: false]}, {:ranch, "~> 1.3.2", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm"},
   "cowlib": {:hex, :cowlib, "1.0.2", "9d769a1d062c9c3ac753096f868ca121e2730b9a377de23dec0f7e08b1df84ee", [], [], "hexpm"},
+  "credo": {:hex, :credo, "0.8.10", "261862bb7363247762e1063713bb85df2bbd84af8d8610d1272cd9c1943bba63", [], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}], "hexpm"},
   "db_connection": {:hex, :db_connection, "1.1.2", "2865c2a4bae0714e2213a0ce60a1b12d76a6efba0c51fbda59c9ab8d1accc7a8", [], [{:connection, "~> 1.0.2", [hex: :connection, repo: "hexpm", optional: false]}, {:poolboy, "~> 1.5", [hex: :poolboy, repo: "hexpm", optional: true]}, {:sbroker, "~> 1.0", [hex: :sbroker, repo: "hexpm", optional: true]}], "hexpm"},
   "decimal": {:hex, :decimal, "1.4.0", "fac965ce71a46aab53d3a6ce45662806bdd708a4a95a65cde8a12eb0124a1333", [], [], "hexpm"},
   "dhcp_server": {:git, "https://github.com/nerves-project/dhcp_server.git", "ff1621ce7d2cd3b148cc4715f68d2c40d249e2c2", [branch: "elixirize-go!"]},