This task appends the contents of two files together.
Input Parameters
SourceFilePath- The path to the file that is to be appended to the target file.
AppendFilePath- The path to the file that the first file will be appended into.
sourceFileEncoding- The encoding of the source file. Different encoding supported can be found here https://msdn.microsoft.com/en-us/library/windows/desktop/dd317756%28v=vs.85%29.aspx
appendFileEncoding- The encoding of the file to append data.
Output Result
String- Returns the path of the appended file