Update spring, re-run binstubs

Gemfile.lock

@@ -589,7 +589,7 @@ GEM
       capybara (>= 2.0.0)
       railties (>= 3)
       spinach (>= 0.4)
-    spring (1.3.3)
+    spring (1.3.6)
     spring-commands-rspec (1.0.4)
       spring (>= 0.9.1)
     spring-commands-spinach (1.0.0)

bin/rails

@@ -3,6 +3,5 @@ begin
   load File.expand_path("../spring", __FILE__)
 rescue LoadError
 end
-APP_PATH = File.expand_path('../../config/application',  __FILE__)
-require_relative '../config/boot'
-require 'rails/commands'
+require 'bundler/setup'
+load Gem.bin_path('rails', 'rails')

bin/rake

@@ -3,6 +3,5 @@ begin
   load File.expand_path("../spring", __FILE__)
 rescue LoadError
 end
-require_relative '../config/boot'
-require 'rake'
-Rake.application.run
+require 'bundler/setup'
+load Gem.bin_path('rake', 'rake')

bin/spring

@@ -1,17 +1,14 @@
 #!/usr/bin/env ruby
 
-# This file loads spring without using Bundler, in order to be fast
-# It gets overwritten when you run the `spring binstub` command
+# This file loads spring without using Bundler, in order to be fast.
+# It gets overwritten when you run the `spring binstub` command.
 
 unless defined?(Spring)
   require "rubygems"
   require "bundler"
 
-  if match = Bundler.default_lockfile.read.match(/^GEM$.*?^    spring \((.*?)\)$.*?^$/m)
-    ENV["GEM_PATH"] = ([Bundler.bundle_path.to_s] + Gem.path).join(File::PATH_SEPARATOR)
-    ENV["GEM_HOME"] = ""
-    Gem.paths = ENV
-
+  if match = Bundler.default_lockfile.read.match(/^GEM$.*?^    (?:  )*spring \((.*?)\)$.*?^$/m)
+    Gem.paths = { "GEM_PATH" => [Bundler.bundle_path.to_s, *Gem.path].uniq }
     gem "spring", match[1]
     require "spring/binstub"
   end