.save
enhance default detector
1.create a separate default detector, to be used when the scoring algorithm fails.
2.use different default anomaly threshold for detectors other than bitmap.
.remove spaces & revert test case back
Name Change and Correlator Enhancement
1. change name.
2. add time based correlation.
3. add shifted correlation score.
4. fix to use getattr.
5. add a dummy luminol base class.
merge with upstream master
fix white space. add denoise
constants
update cross correlator. add constants
adjust threshold to a percentage value, adding doc
moving smoothing factor to constants.
Merge pull request #269 from yarongguo/master

Add a separate default detector & fix threshold range for ema detector