Added a skeleton for a demo paper.
Group by key support
Merge branch 'master' of https://github.com/sjyk/sampleclean-async
Updated the AQP engine, added in rule based filters
Added in a "merge" data cleaning function
Adding the comparison feature
SampleClean CLI interface
Clean up parser remove experimental features
Refactoring and cleanup
Clean up client side error handling
Clean up parser remove experimental features
Added filtering templates & instructions to create new tasks.
Fix readme
Pipeline notify code, blanked figure out logic when building the interface
Transformed ActiveDriver into an ER demo program, made it runnable without spark-submit.
Bugfix in AMT templates.
Added more authors to demo outline.
Ignoring stupid OSX files.
Merge branch 'master' of https://github.com/sjyk/sampleclean-async

Conflicts:
	src/main/scala/sampleclean/parse/SampleCleanParser.scala
Merge branch 'changes_Juan' of https://github.com/sjyk/sampleclean-async into changes_Juan