Fix bug in addCustomCode (after argument is not assigned)
Deal with the case where a Matlab colormap has only 1 colour (as this is not allowed in pgfplots)
Merge commit 'f204e544bf36a123713b8051de724c0d3f0daa30'

Conflicts:
	src/matlab2tikz.m
In matlab2pgfplotsColormap need to deal with the case where the MATLAB colormap has only a single color, which is valid in MATLAB but an error in pgfplots. Simply repeating the single color in the colormap seems to produce the desired effect.
Merge branch 'colormap'
Merge commit '531759ea1f2f805c5b2ec975ee93dc15fff84184'
Merge pull request #355 from LJeub/master

Fix bug for colormaps with only 1 colour