title: Iconv will be deprecated in the future
body: <p>I tried to read an excel file using this code:</p>
  
  <pre><code>require 'rubygems'
  require 'parseexcel'
  workbook=Spreadsheet::ParseExcel.parse("D:/TEST.xls")
  </code></pre>
  
  <p>and I faced the following error:</p>
  
  <pre><code>C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require': iconv will be deprecated in the future, use String#encode instead. default formats are encoded in ISO-8859-1
  C:/Ruby193/lib/ruby/gems/1.9.1/gems/parseexcel-0.5.2/lib/parseexcel/olestorage.rb:108:in `initialize': No such file or directory - D:/TEST.xls (Errno::ENOENT)
  from C:/Ruby193/lib/ruby/gems/1.9.1/gems/parseexcel-0.5.2/lib/parseexcel/olestorage.rb:108:in `open'
  from C:/Ruby193/lib/ruby/gems/1.9.1/gems/parseexcel-0.5.2/lib/parseexcel/olestorage.rb:108:in `initialize'
  from C:/Ruby193/lib/ruby/gems/1.9.1/gems/parseexcel-0.5.2/lib/parseexcel/parser.rb:173:in `new'
  from C:/Ruby193/lib/ruby/gems/1.9.1/gems/parseexcel-0.5.2/lib/parseexcel/parser.rb:173:in `parse'
  from C:/Ruby193/lib/ruby/gems/1.9.1/gems/parseexcel-0.5.2/lib/parseexcel/parseexcel.rb:10:in `parse'
  from lkc.rb:4:in `&lt;main&gt;'
  </code></pre>
  
  <p>What is the problem, and why can't I read the excel file?</p>