Remove Files gem as a dependency (#30)

Pulled from ctran/annotate_models#982. Credit to
@petergoldstein.

Gemfile

@@ -18,6 +18,5 @@ group :development, :test do
 end
 
 group :test do
- gem 'files', require: false, path: "vendor/files"
  gem 'git', require: false
 end

spec/lib/annotate_rb/model_annotator/model_files_getter_spec.rb

@@ -18,18 +18,15 @@
 
  context 'when `model_dir` is valid' do
  let(:model_dir) do
- Files do
- file 'foo.rb'
- dir 'bar' do
- file 'baz.rb'
- dir 'qux' do
- file 'quux.rb'
- end
- end
- dir 'concerns' do
- file 'corge.rb'
- end
- end
+ dir = Dir.mktmpdir
+ FileUtils.touch(File.join(dir, 'foo.rb'))
+ FileUtils.mkdir_p(File.join(dir, 'bar'))
+ FileUtils.touch(File.join(dir, 'bar', 'baz.rb'))
+ FileUtils.mkdir_p(File.join(dir, 'bar', 'qux'))
+ FileUtils.touch(File.join(dir, 'bar', 'qux', 'quux.rb'))
+ FileUtils.mkdir_p(File.join(dir, 'concerns'))
+ FileUtils.touch(File.join(dir, 'concerns', 'corge.rb'))
+ dir
  end
 
  context 'when the model files are not specified' do

spec/spec_helper.rb

@@ -5,7 +5,6 @@
 require 'active_support/core_ext/object/blank'
 require 'active_support/core_ext/class/subclasses'
 require 'active_support/core_ext/string/inflections'
-require 'files'
 require 'byebug'
 require 'bigdecimal'
 require 'tmpdir'

spec/support/annotate_test_helpers.rb

@@ -10,7 +10,7 @@ def annotate_one_file(options = {})
  def write_model(file_name, file_content)
  fname = File.join(@model_dir, file_name)
  FileUtils.mkdir_p(File.dirname(fname))
- File.open(fname, 'wb') { |f| f.write file_content }
+ File.binwrite(fname, file_content)
 
  [fname, file_content]
  end