[MRG + 1] Clarified error msg in plot_partial_dependence#7673

Merged

NelleV merged 3 commits intoscikit-learn:masterfrom

kgilliam125:correct-partial-dep-err-msg

Oct 25, 2016

Commits on Oct 14, 2016

Clarified error msg in plot_partial_dependence
kgilliam125
committed

Commits on Oct 18, 2016

Changed err msg for feature[i] out of range. Updated docs.
kgilliam125
committed

Commits on Oct 21, 2016

Error message shows invalid value.
kgilliam125
committed