Restrict socket dep below 0.3.6.

Later than that seems to be incompatible with connecting, resulting in
an error.

mix.exs

@@ -34,7 +34,7 @@ defmodule ElixirNsq.Mixfile do
       {:ibrowse, github: "cmullaparthi/ibrowse", tag: "v4.1.2"},
       {:httpotion, "~> 2.1.0"},
       {:uuid, "~> 1.1.2"},
-      {:socket, "~> 0.3.1"},
+      {:socket, ">= 0.3.1 and <= 0.3.5"},
 
       # testing
       {:secure_random, "~> 0.2", only: :test},

mix.lock

@@ -1,11 +1,11 @@
 %{"connection": {:hex, :connection, "1.0.1"},
-  "cowboy": {:hex, :cowboy, "1.0.4"},
-  "cowlib": {:hex, :cowlib, "1.0.2"},
+  "cowboy": {:hex, :cowboy, "1.0.4", "a324a8df9f2316c833a470d918aaf73ae894278b8aa6226ce7a9bf699388f878", [:make, :rebar], [{:cowlib, "~> 1.0.0", [hex: :cowlib, optional: false]}, {:ranch, "~> 1.0", [hex: :ranch, optional: false]}]},
+  "cowlib": {:hex, :cowlib, "1.0.2", "9d769a1d062c9c3ac753096f868ca121e2730b9a377de23dec0f7e08b1df84ee", [:make], []},
   "http_server": {:git, "https://github.com/parroty/http_server.git", "09ea61f42097483d3e70749be30490004a5df38f", [tag: "09ea61f42097483d3e70749be30490004a5df38f"]},
-  "httpotion": {:hex, :httpotion, "2.1.0"},
+  "httpotion": {:hex, :httpotion, "2.1.0", "3fe84fbd13d4560c2514da656d022b1191a079178ee4992d245fc3c33c01ee18", [:mix], []},
   "ibrowse": {:git, "https://github.com/cmullaparthi/ibrowse.git", "ea3305d21f37eced4fac290f64b068e56df7de80", [tag: "v4.1.2"]},
-  "poison": {:hex, :poison, "1.5.0"},
-  "ranch": {:hex, :ranch, "1.2.0"},
-  "secure_random": {:hex, :secure_random, "0.2.0"},
-  "socket": {:hex, :socket, "0.3.1"},
-  "uuid": {:hex, :uuid, "1.1.2"}}
+  "poison": {:hex, :poison, "1.5.0", "f2f4f460623a6f154683abae34352525e1d918380267cdbd949a07ba57503248", [:mix], []},
+  "ranch": {:hex, :ranch, "1.2.0", "b286a948a0706a700a9f577e5cecbb2dc66097ea79f3ddb20ba5536069bdb7aa", [:make], []},
+  "secure_random": {:hex, :secure_random, "0.2.0", "d5458ab5613410439c21a2fdbc52e98e6c96338f3ea25d08220c30cfc55f1238", [:mix], []},
+  "socket": {:hex, :socket, "0.3.1", "c17c6da3f85ae07b730fcfa3b9b44051e1f7cbd5c202c46ea926493004d4cc18", [:mix], []},
+  "uuid": {:hex, :uuid, "1.1.2", "add3d0a6324ac2e3974855822ddf1cd4e270d8c136a75bcb71332bd4956b0563", [:mix], []}}