dev-ruby/instance_storage: fix USE=doc, add ruby23

Also avoid a dependency on bundler.

Package-Manager: portage-2.2.26

dev-ruby/instance_storage/instance_storage-1.0.0.ebuild

@@ -4,8 +4,9 @@
 
 EAPI=5
 
-USE_RUBY="ruby20 ruby21 ruby22"
+USE_RUBY="ruby20 ruby21 ruby22 ruby23"
 
+RUBY_FAKEGEM_RECIPE_DOC="rdoc"
 RUBY_FAKEGEM_EXTRADOC="README.md"
 
 inherit ruby-fakegem
@@ -16,3 +17,7 @@ LICENSE="MIT"
 SLOT="0"
 KEYWORDS="~amd64 ~x86"
 IUSE=""
+
+all_ruby_prepare() {
+	sed -i -e '/bundler/ s:^:#:' Rakefile test/instance_storage_test.rb || die
+}