SocketReader ver 0.1.3 released

Changelog:

(1) BUGFIX: socketReader would not tidy up upon issuing SIGTERM on it. This has been fixed.

(2) DOC: Added a chapter on "Deamons"

(3) Added option -P (--prefix) to enable definition of static file prefixes.

(4) Added option --hl7prefix to generate the prefix for each file from MSH-9-message_type of the current HL7 message.