Added ConditionalFormatting classes in Codaxy.Xlio, added XSD generated classes in filtered.cs, added Test in Samples project.
added conditional formatting condition and binded to styles
added reading and writing of conditional formatting
Changed ConditionalFormatting added Sample and tests.
Merge branch 'master' of github.com:dejanradic/xlio into dejanradic-master

Conflicts:
	Source/Codaxy.Xlio/IO/XlsxFileReader.cs
	Source/Codaxy.Xlio/IO/XlsxFileWriter.cs