52 Week High/Low with Date fix and pom.xml update

The 52 week high/low with date code was not working properly.  It was outputting two key value pairs for each symbol, one with the userDate and one with the previousDate, like below:
NYSE IBM 2010 125.49
NYSE IBM 2009 122.97

So I removed the year parameter from the key and verified the functionality.  For 52 week min, it now would print:
NYSE IBM 122.97


The code was also not running at first and throwing exceptions.  I then noticed it was for the counters and when I updated the pom.xml to use Apache Hadoop client 2.3.0 it was working fine.

Please accept this pull request ASAP.