added operator for MLHR-1204
Merge branch 'dt-dev' of https://github.com/DataTorrent/Malhar into MLHR-1204
Squashed commit of the following:

commit 9a54f08e4b75397635cf07ff8ddbe97acaa2e8ce
Author: Milinda Sreenath <milinda@datatorrent.com>
Date:   Mon Jul 28 10:24:49 2014 -0700

    changed database credentials

commit f4f8e7e8794d4f93e81ac6843516012e421c0f44
Merge: f7314f6 bcc14a1
Author: Milinda Sreenath <milinda@datatorrent.com>
Date:   Fri Jul 25 17:00:13 2014 -0700

    Merge branch 'dt-dev' of https://github.com/datatorrent/Malhar into new_acc

commit f7314f67756960b7ca84481956d2f0fa4d59d73b
Author: Milinda Sreenath <milinda@datatorrent.com>
Date:   Fri Jul 25 16:50:36 2014 -0700

    added accumulo operators

commit db1d5459b7270a7113aa8694919049eec73bb973
Author: Milinda Sreenath <milinda@datatorrent.com>
Date:   Fri Jul 25 16:49:08 2014 -0700

    added accumulo operators

commit e853702a8d82d9e5158af810cf225b4801e209b4
Author: Milinda Sreenath <milinda@datatorrent.com>
Date:   Mon Jul 14 14:52:32 2014 -0700

    added accumulo files

commit 6f66bf506a7bee243c93af5ea14c27cbdae2a0fa
Author: Milinda Sreenath <milinda@datatorrent.com>
Date:   Mon Jul 14 14:51:36 2014 -0700

    saving accumulo changes

commit 7de3653fad75aa157f5f71e66f87d0d518376131
Merge: 41da8d0 a67ee91
Author: Milinda Sreenath <milinda@datatorrent.com>
Date:   Fri Jul 11 16:43:45 2014 -0700

    resolving merge conflicts

commit 41da8d0ac0bc8353a780575b7450ba7e2e75646b
Author: Milinda Sreenath <milinda@datatorrent.com>
Date:   Fri Jul 11 16:25:38 2014 -0700

    accumulo entry added to pom file
Fixed licensing and documentation
Renamed XmlDOMOperator to AbstractXmlDOMOperator. Created a simple XmlDOMOperator that is deprecated for backwards compatibility reason. It will be removed in the next release
Merge branch 'dt-dev' of https://github.com/DataTorrent/Malhar into MLHR-1204
retaining the history when  migrating to app bundles
Merge remote-tracking branch 'origin/dt-dev' into appBundle

Conflicts:
	demos/pom.xml
moved to demos.old
moved the doc
performance improved and benchmark added
frauddetect and machinedata
frauddetect and machinedata
leftover demos
minor fixes
wordcount testing
file path
twitter
twitter test
twitter