fix spring ... was not reloading lib folder

Gemfile

@@ -48,6 +48,7 @@ group :development, :test do
   # preloading environment
   gem "spring"
   gem "spring-commands-rspec"
+  gem "spring-watcher-listen"
 
   # GUID generation
   gem "uuid", "~> 2.3.8"

Gemfile.lock

@@ -201,6 +201,9 @@ GEM
     spring (1.3.6)
     spring-commands-rspec (1.0.4)
       spring (>= 0.9.1)
+    spring-watcher-listen (2.0.0)
+      listen (>= 2.7, < 4.0)
+      spring (~> 1.2)
     sprockets (3.2.0)
       rack (~> 1.0)
     sprockets-rails (2.3.2)
@@ -238,6 +241,7 @@ DEPENDENCIES
   simplecov-rcov (= 0.2.3)
   spring
   spring-commands-rspec
+  spring-watcher-listen
   sqlite3 (~> 1.3.10)
   uuid (~> 2.3.8)
   yard

config/spring.rb

@@ -1 +1,6 @@
 Spring.application_root = "./test/dummy"
+
+root_path = Pathname.new(File.expand_path("."))
+Spring.watcher = Spring::Watcher::Listen.new(root_path, 0.2)
+
+Spring.watch("./lib/")