Counts words in UTF8 encoded, '\n' delimited text received from the network every second.
Usage: NetworkWordCount <master> <hostname> <port>
<master> is the Spark master URL. In local mode, <master> should be 'local[n]' with n > 1.
<hostname> and <port> describe the TCP server that Spark Streaming would connect to receive data.
To run this on your local machine, you need to first run a Netcat server
`$ nc -lk 9999`
and then run the example
`$ ./run org.apache.spark.streaming.examples.JavaNetworkWordCount local localhost 9999`
"In local mode, <master> should be 'local[n]' with n > 1");