Added the SMOOTHER option to config files, allowing savitsky-golay smoothing instead of only a moving average smoother to be applied.
Merge pull request #3 from funnell/savgol-smooth

Savitsky-Golay smoother
- changed the way attributes are read for regions
-- can now be read directly from bedfiles
- refactored genotypereaddepthtrack
-- uses new way of setting region attributes
-- now reads genotypes of associated SNP directly from HDF5 files
-- dynamically assigns individuals to genotype classes
drawing config for 10 individuals examples
can now draw vertical lines
added default colors to genotype tracks
added missing ernst state label for strong promoter