Merge branch 'raw-plot' of https://github.com/Eric89GXL/mne-python into raw-plot
Merge branch 'master' of https://github.com/mne-tools/mne-python into raw-plot
FIX/ENH: pick response channel + add ref_meg to raw.plot

This PR addresses the problem of unclassified channels in raw.plot
for 4D imported data including a) ref_meg and b) reponse-trigger
channels
FIX: add the missing types to inds
COSMITS
Merge pull request #493 from dengemann/fix-raw-plot

FIX/ENH: pick response channel + add ref_meg to raw.plot