Merge pull request #1 from rdinnager/master

Made resize value a user option (Thanks, Russell!)
Merge pull request #2 from rdinnager/master

Importing `mpd_select_colours(...)` to woobe/rPlotter
v 0.0.5 - imported mpd_select_colours.R and created new rd files
Merge pull request #3 from rdinnager/master

Minor fixes
Updated help document
v0.0.6 added informative error if no colours are returned after thresholding and now palette lists are returned sorted by descending MPD.
Added Russell Dinnage as contributor
Added 'interpolate_colours(...)'
yep
don't know