HH-87 Add HDFSUser for PipeIn and edit desc in other ECL macros

Signed-off-by: JamesDeFabia <JamesDeFabia@lexisnexis.com>
Merge pull request #58 from JamesDeFabia/HH87_DOCS_hdfsuserParameter

HH-87 Add HDFSUser for PipeIn and edit desc in other ECL macros

Looks good. This should also be merged to Master