added new folder IO to write testcases for the classes of public->IO
added new folder Str to write testcases for the classes of public->Str
added new folder Util to write testcases for the classes of public->Util
added xml files for testing EmbededResourceLoader class
added opencover report for tested classes
committing Pubic.Test solution
change FormatConverter.cs for 100% opencover report
moved the files  to the corresponding folders
changes made to delete the commented portion of AddZeroAfterDecimal method and replacing new Apache License description