Added a parameter to publish new blocks during the state
'IsInitialDownload' in main.cpp.

Did notice a document called doc/coding.txt. Oups.

To compile with 0mq:
--------------------
make -f makefile.unix USE_ZMQ=1

To compile without 0mq:
-----------------------
make -f makefile.unix USE_ZMQ=0

or

make -f makefile.unix