Running from maven

This adds a readme and bundler to run the app from maven.  Also bundles a nice little unit test to confirm file output size is correct.  No need for a bash script or anything to run the test anymore :) 

$> java -cp '/home/jvyas/Development/HCFS/FSWriteTest/target/*' org.hcfs.FSWriteTest 100 1 out.txt org.apache.hadoop.fs.RawLocalFileSystem
13/11/22 12:00:10 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
DONE : Total ms run:7 file out size: 100