clean up file listings for rdoc, yard, and gemspec

.document

@@ -0,0 +1,4 @@
+lib/**/*.rb
+-
+License.txt
+Changelog.md

.yardopts

@@ -1,7 +1,3 @@
---no-document
 --no-private
 --exclude features
 --markup markdown
--
-Changelog.md
-License.txt

rspec-expectations.gemspec

@@ -15,10 +15,9 @@ Gem::Specification.new do |s|
 
   s.rubyforge_project  = "rspec"
 
-  s.files            = `git ls-files -- lib/*`.split("\n")
-  s.files           += ["License.txt"]
+  s.files            = `git ls-files -- lib/**/*.rb`.split("\n")
+  s.files           += %w[README.md License.txt Changelog.md .document .yardopts]
   s.test_files       = `git ls-files -- {spec,features}/*`.split("\n")
-  s.extra_rdoc_files = [ "README.md", "License.txt"]
   s.rdoc_options     = ["--charset=UTF-8"]
   s.require_path     = "lib"