Add an example for scoped services

examples/scoped_services.rb

@@ -0,0 +1,28 @@
+require 'dependency_injection/container'
+require 'dependency_injection/loaders/yaml'
+
+c = DependencyInjection::Container.new
+loader = DependencyInjection::Loaders::Yaml.new(c)
+loader.load(File.join(File.dirname(File.expand_path(__FILE__)), 'scoped_services.yml'))
+
+class ContainerScopedService
+  def initialize
+    puts 'Container scoped initialization'
+  end
+end
+
+class PrototypeScopedService
+  def initialize
+    puts 'Prorotype scoped initialization'
+  end
+end
+
+c.get('my.container.scoped.service')
+# => Container scoped initialization
+c.get('my.container.scoped.service')
+# =>
+
+c.get('my.prototype.scoped.service')
+# => Prorotype scoped initialization
+c.get('my.prototype.scoped.service')
+# => Prorotype scoped initialization

examples/scoped_services.yml

@@ -0,0 +1,6 @@
+services:
+  my.container.scoped.service:
+    class: 'ContainerScopedService'
+  my.prototype.scoped.service:
+    class: 'PrototypeScopedService'
+    scope: 'prototype'

lib/dependency_injection/scope_widening_injection_error.rb

@@ -1,2 +1,2 @@
-class ScopeWideningInjectionError < Error
+class ScopeWideningInjectionError < Exception
 end