fixed documentation explaining how to run connected components
Merge branch 'master' of https://github.com/dbickson/graphlab
Merge branch 'master' of https://github.com/graphlab-code/graphlab
fixed documentation regarding cf predictions to be clearer
Merge pull request #35 from dbickson/master

fixed documentation of connected components on how to run histogram of component sizes.
Also fixed cf documentation to explain creation of ratings better