parsing experiment dir fails

[lzamparo]

Using python 2.7.8 (default, Oct 18 2014, 12:50:18) [GCC 4.9.1],

I found that os.path.realpath() does not remove the '' character if the path is specified as (e.g) '/path/to/experiments/':

'/home/lee/~/projects/Spearmint/examples'

I suggest that os.path.realpath() should wrap os.path.expanduser(), as in the following example.

os.path.realpath(os.path.expanduser('~/projects/Spearmint/examples/'))
'/home/lee/projects/Spearmint/examples'
os.path.realpath(os.path.expanduser('~/projects/Spearmint/examples/'))

I'll create a PR

[lzamparo]

Ugh, markdown ate part of my first example:

os.path.realpath('/projects/Spearmint/examples') returns
'/home/lee//projects/Spearmint/examples'