added quick README

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+Simple 3M SIP2 Standard Interchange Protocol implementation in perl
+
+
+Why do we need another SIP2 implementation?
+
+That's a great question! Mostly because others are wrong in one way or another, most
+importantly: 
+
+
+       protocol specifies that messages must end with <CR> (ASCII 13)
+
+       most implementation put CR/LF or (even worse) just LF
+
+
+This is very annoying, and creating simple and correct implementation seems to make sense.
+
+
+References:
+
+* http://solutions.3m.com/wps/portal/3M/en_US/library/home/resources/protocols/
+
+Exiting implementations:
+
+* http://openncip.org/
+* http://www.rice.edu/perl4lib/archives/2003-05/msg00032.html
+* http://code.google.com/p/php-sip2/source/browse/trunk/sip2.class.php
+