Merge pull request #20 from gbadiali/master

Replace optparse with argparse, add command line parser testing
Code formatting cleanup + argparse as dependence

Change-Id: I04c3f684868e8ab1d2254635e8f8dfeeaa6a7adc
Bumped version to 1.1.0

Change-Id: Ib03403a614100e8df4805b49a69f7fa77ca7703a
Fix auto complete

Change-Id: If8989139f228b6fe77b4bc3727b8d926a4c4adf1

Change-Id: Id16d6684354e7bdfef8d6f0d19f466e7fe80d367
Add datanode-reading commands: text, tail, copyToLocal, getmerge, get, cat