__del__ called on partially constructed ExperimentGrid

[cancan101]

I think that __del__ is being called on partially constructed ExperimentGrid:

Exception AttributeError: "ExperimentGrid instance has no attribute 'vmap'" in <bound method ExperimentGrid.__del__ of <spearmint.ExperimentGrid.ExperimentGrid instance at 0x7fc5db221710>> ignored

[KristianGFleron]

I had the same problem on windows.
Seems to be a difference in the read and write mode on linux and windows.

changed write mode from 'w' to 'wb'
and read mode from 'r' to 'rb'
in the ExperimentGrid.py

def _save_jobs(self):
    # Write everything to a temporary file first.
    fh = tempfile.NamedTemporaryFile(mode='wb', delete=False)


def _load_jobs(self):
    fh   = open(self.jobs_pkl, 'rb')