fixed zeromq 3.x compilation
fix type size of socket options and polling time unit for zeromq 3,x
Adding replication option over a pzq cluster
README.md formatting
README.md formatting
new cluster options described in README
Check added on replicas not removed because their ack was received before replicas was achieved
slight modification to ignore cluster code when no replication is required
removed all tabs and indentation was forced to bsd style on all fiies
Merge pull request #3 from cedric-pessan/master

Pzq cluster feature with replications