added the default normalization class
added the cdr generator that writes to kafka
updated the kafka dependencies
 using RandomStringUtils to generate the random Numbers
added apache commons dependency in pom
Merge pull request #523 from gauravgopi123/github-512

Github 512
added input generator and created a simple dag
Merge pull request #547 from siyuanh/telecom

Fix Github #545
fixed NPE in CallForwardingAggregatorOperator
Merge branch 'telecom' into github-525
integrated dag with csv parser
made byteInputPort optional for CsvParsert
added the feature to limit the number of tuples blast from input generator
added license
CDR simulator #524
Merge pull request #557 from gauravgopi123/github-525

Github 525
Fix Docs #524
Merge pull request #558 from siyuanh/cdrsimulator

CDR simulator #524