Create DList from multiple Delimited text files or directories containing Delimited Text Files.
using a method that's compatible across hadoop versions to list paths
Merge pull request #313 from deeptibhatia/multiple_input_seq_for_delimited_files

fromDelimitedTextFiles to support multiple files or directory paths as input, instead of a single file or directory.
added comments and documentation
removed deprecated methods
updated to scala 2.10.3