Added mpl exceptions.
not integrated, but added matlab and ggplot2 examples.
Added matlab-specific and ggplot-specific examples.
Merge branch 'exceptions' into reorganization
Update README.md
Exceptions scripts now have "_" underscores instead of "-" hyphens.
Create matlab_exceptions.m
executables are saved with "_" underscore instead of "-" hyphen now.
Merge branch 'reorganization' of https://github.com/plotly/documentation into reorganization
removed old executables (ready for fresh run whenever)
added tests for 'allowable' keys in config.
added prepend and append to allowable example config keys.
chart-type config files and example re-ordering
removed notion of code 'append', append only exists as meta-info now.
Merge branch 'reorganization' of https://github.com/plotly/documentation into reorganization
added 'init' to allowable for examples and 'description' for branches.

also, added a contour-scatter example
finished filling out config files
ran all examples
Update config.json