* Update to_excel.gemspec

* Style README

README.rdoc

@@ -53,7 +53,7 @@ You can export the column values as if it was an attribute :
 [@computers].to_excel(:map => {Computer => [:id, :macintosh?]})
 
 
-==== Controller side
+== Controller side
 
  class UsersController < ....
 

to_excel.gemspec

@@ -1,18 +1,14 @@
-spec = Gem::Specification.new do |s| 
-  s.name = "to_excel"
-  s.version = "1.0"
-  s.author = "Philippe Cantin"
-  s.email = ""
-  s.homepage = "http://github.com/anoiaque/to_excel"
-  s.platform = Gem::Platform::RUBY
-  s.summary = "Export ruby objects  to excel file. Allow many collections of different class. Can include associations attributes."
-  s.files = FileList["{lib}/*.rb"].to_a
-  s.require_path = "lib"
-  s.test_files = FileList["{test}/*test.rb"].to_a
-  s.has_rdoc = false
-  s.extra_rdoc_files = ["README"]
-end
-
-Rake::GemPackageTask.new(spec) do |pkg| 
-  pkg.need_tar = false 
-end 
+specifications = Gem::Specification.new do |spec| 
+  spec.name = "to_excel"
+  spec.version = "1.0"
+  spec.author = "Philippe Cantin"
+  spec.homepage = "http://github.com/anoiaque/to_excel"
+  spec.platform = Gem::Platform::RUBY
+  spec.summary = "Export ruby objects  to excel file. Allow many collections of different classpec. Can include associations attributespec."
+  spec.description = "Export ruby objects  to excel file"
+  spec.files = Dir['lib/**/*.rb']
+  spec.require_path = "lib"
+  spec.test_files  = Dir['test/**/*.rb']
+  spec.has_rdoc = false
+  spec.extra_rdoc_files = ["README.rdoc"]
+end