Trying to fix bug with reading incomplete json data.
single master & worker wordcount now works.
Multinode map reduce works. The only limitation is that all the workers
must be up and running before the master. The config file needs to be in
a specific format (each line contains rank and ip:port, no blank lines).
Each example will now be launched using command line flags like so :
./word_count -rank=2 -config=config_file -inputdir=datainput