add some documentation and comments
rearrange main.py and add make_plot.py to simple example

Also fix a bug with DefaultChooser where grid_size and grid_seed were
not being used.

add some comments and documentation

use 4 spaces in branin.py
unstandardize the function value
add an example for a noisy objective function
a bit more code cleanup and documentation
change experiment name

branin_noisy_new1 -> branin_noisy
fix spelling
Merge pull request #7 from js850/add_docs

add documentation, some code cleanup, and a bug fix