Prepare the 1.3.2 release (#187)

This address some remaining Elixir 1.4 warnings, tweaks the docs, and
updates a few package dependencies.

mix.exs

@@ -1,7 +1,7 @@
 defmodule Thrift.Mixfile do
   use Mix.Project
 
-  @version "1.3.1"
+  @version "1.3.2"
   @project_url "https://github.com/pinterest/elixir-thrift"
 
   def project do
@@ -34,9 +34,8 @@ defmodule Thrift.Mixfile do
      # Docs
      name: "Thrift",
      docs: [
-       main: "readme",
-       extras: ["README.md": [group: "Documents", title: "README"]],
-       extra_section: "Overview",
+       main: "README",
+       extras: ["README.md": [title: "README"]],
        source_ref: @version,
        source_url: @project_url]]
   end
@@ -47,7 +46,7 @@ defmodule Thrift.Mixfile do
 
   defp deps do
      [{:ex_doc, "~> 0.14", only: :dev},
-      {:excoveralls, "~> 0.5.7", only: [:dev, :test]},
+      {:excoveralls, "~> 0.6", only: [:dev, :test]},
       {:credo, "~> 0.5", only: [:dev, :test]},
       {:dialyxir, "~> 0.4", only: :dev, runtime: false}
      ]

mix.lock

@@ -4,9 +4,9 @@
   "dialyxir": {:hex, :dialyxir, "0.4.1", "236056d6acd25f740f336756c0f3b5dd6e2f0156074bc15f3b779aeee15390c8", [:mix], []},
   "earmark": {:hex, :earmark, "1.0.3", "89bdbaf2aca8bbb5c97d8b3b55c5dd0cff517ecc78d417e87f1d0982e514557b", [:mix], []},
   "ex_doc": {:hex, :ex_doc, "0.14.5", "c0433c8117e948404d93ca69411dd575ec6be39b47802e81ca8d91017a0cf83c", [:mix], [{:earmark, "~> 1.0", [hex: :earmark, optional: false]}]},
-  "excoveralls": {:hex, :excoveralls, "0.5.7", "5d26e4a7cdf08294217594a1b0643636accc2ad30e984d62f1d166f70629ff50", [], [{:exjsx, "~> 3.0", [hex: :exjsx, optional: false]}, {:hackney, ">= 0.12.0", [hex: :hackney, optional: false]}]},
+  "excoveralls": {:hex, :excoveralls, "0.6.1", "9e946b6db84dba592f47632157ecd135a46384b98a430fd16007dc910c70348b", [:mix], [{:exjsx, "~> 3.0", [hex: :exjsx, optional: false]}, {:hackney, ">= 0.12.0", [hex: :hackney, optional: false]}]},
   "exjsx": {:hex, :exjsx, "3.2.1", "1bc5bf1e4fd249104178f0885030bcd75a4526f4d2a1e976f4b428d347614f0f", [], [{:jsx, "~> 2.8.0", [hex: :jsx, optional: false]}]},
-  "hackney": {:hex, :hackney, "1.6.3", "d489d7ca2d4323e307bedc4bfe684323a7bf773ecfd77938f3ee8074e488e140", [:mix, :rebar3], [{:certifi, "0.7.0", [hex: :certifi, optional: false]}, {:idna, "1.2.0", [hex: :idna, optional: false]}, {:metrics, "1.0.1", [hex: :metrics, optional: false]}, {:mimerl, "1.0.2", [hex: :mimerl, optional: false]}, {:ssl_verify_fun, "1.1.1", [hex: :ssl_verify_fun, optional: false]}]},
+  "hackney": {:hex, :hackney, "1.6.5", "8c025ee397ac94a184b0743c73b33b96465e85f90a02e210e86df6cbafaa5065", [:rebar3], [{:certifi, "0.7.0", [hex: :certifi, optional: false]}, {:idna, "1.2.0", [hex: :idna, optional: false]}, {:metrics, "1.0.1", [hex: :metrics, optional: false]}, {:mimerl, "1.0.2", [hex: :mimerl, optional: false]}, {:ssl_verify_fun, "1.1.1", [hex: :ssl_verify_fun, optional: false]}]},
   "idna": {:hex, :idna, "1.2.0", "ac62ee99da068f43c50dc69acf700e03a62a348360126260e87f2b54eced86b2", [], []},
   "jsx": {:hex, :jsx, "2.8.1", "1453b4eb3615acb3e2cd0a105d27e6761e2ed2e501ac0b390f5bbec497669846", [:mix, :rebar3], []},
   "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [], []},

test/parser/resolver_test.exs

@@ -1,6 +1,5 @@
 defmodule ResolverTest do
   use ExUnit.Case
-  @thrift_dir "test/fixtures/app/thrift"
 
   alias Thrift.Parser.FileGroup
   alias Thrift.Parser.Models.{

test/test_helper.exs

@@ -1,8 +1,6 @@
 ExUnit.start()
 
 defmodule ThriftTestHelpers do
-  @root_dir "test/fixtures/thrift/"
-
   defmacro __using__(_) do
     quote do
       require ThriftTestHelpers