remove unpack_record definition.
Bug fix : OLEStorageLitePPSRoot#_saveHeader
add test for issue 24 - Setting properties in ruby 1.9.3 fails.
test for issue 24 pass.

  Behavior of Array#[range]=nil is different between ruby 1.8.7 and 1.9 later.
  To get same result, use Array#[range] = []
typo
remove -w ruby option and typo.
add test_properties.rb
README.rdoc : add v1.0.0 comment, and modify some sentence.
set version to v1.0.0.