fix invalid configuration for gem package

Author: hsbt

rdoc.gemspec

@@ -26,6 +26,7 @@ RDoc includes the +rdoc+ and +ri+ tools for generating and displaying documentat
 
   s.email = ["[email protected]", "[email protected]", "[email protected]"]
 
+  s.bindir = "exe"
   s.executables = ["rdoc", "ri"]
 
   s.extra_rdoc_files += %w[
@@ -42,8 +43,7 @@ RDoc includes the +rdoc+ and +ri+ tools for generating and displaying documentat
   ]
 
   s.files = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
-  s.files << "/lib/rdoc/rd/block_parser.rb" << "/lib/rdoc/rd/inline_parser.rb" << "/lib/rdoc/markdown.rb"
-  s.bindir = "exe"
+  s.files << "lib/rdoc/rd/block_parser.rb" << "lib/rdoc/rd/inline_parser.rb" << "lib/rdoc/markdown.rb"
 
   s.homepage = "http://docs.seattlerb.org/rdoc"
   s.licenses = ["Ruby"]