added sample codebook using PROPPR
added a sample codebook using dogwalking
Update getclean.md

Added link to two gists of codebooks.
removed two sample files
updated to match teachers
cleaned up merge text
Merge pull request #32 from kirstenfrank/master

Added two sample codebooks.
Added DSC link.
Update curated.md
Create Networking
Added networking field.
Merge pull request #39 from aglagla/dss

Dss
Merge branch 'master' of https://github.com/charany1/DataScienceSpecialization.github.io into charany1-master
added group pages to curated section
delete .Rhistory
added md live demo link
added reference books
organized links
add ROC links to Practical Machine Learning page
Merge pull request #42 from justmarkham/master

add ROC links to Practical Machine Learning page