public LicenseHeaderStep(File licenseFile,Charset encoding,String delimiter) throws IOException {
  this(new String(Files.readAllBytes(licenseFile.toPath()),encoding),delimiter);
}

public LicenseHeaderStep ( File licenseFile , Charset encoding , String delimiter ) throws IOException { this ( new String ( Files . readAllBytes ( licenseFile . toPath ( ) ) , encoding ) , delimiter ) ; }
reads the license file from the given file .
