Add Spring binstubs for RSpec

bin/rspec

@@ -1,4 +1,9 @@
 #!/usr/bin/env ruby
+begin
+  load File.expand_path('../spring', __FILE__)
+rescue LoadError => e
+  raise unless e.message.include?('spring')
+end
 #
 # This file was generated by Bundler.
 #

bin/spring

@@ -4,12 +4,12 @@
 # It gets overwritten when you run the `spring binstub` command.
 
 unless defined?(Spring)
-  require "rubygems"
-  require "bundler"
+  require 'rubygems'
+  require 'bundler'
 
-  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"
+  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
 end