add navigation bar to summary2.
Merge branch 'master' of github.com:0xdata/h2o
Merge branch 'master' of github.com:0xdata/h2o
Merge branch 'master' of github.com:0xdata/h2o
R wrapper for summary2
summary2 R wrapper; histograms R wrapper.
never assign NULL to vector element; NULL represents empty object and not a primative value.
pretty format summary for enums.; add R wrapper 'histograms' for summary2
Merge branch 'master' of github.com:0xdata/h2o
merged with master
Merge branch 'master' of github.com:0xdata/h2o