Several enhancements to the Excel Type Provider
1) Upgrading to the latest version of the ExcelDataReader library.
2) Handling loading higher version of ICSharpCode.SharpZipLib.
3) Defaulting to the first sheet in the spreadsheet if a sheet is not specifically indicated.
4) Using a Row type, with a ToString() method
Merge pull request #3 from JohnDoeKyrgyz/master

Several enhancements to the Excel Type Provider