handled mp.cpu_count() NotImplementedError
removed ravel_peaks parameter in peaks_from_model call
Merge pull request #262 from gabknight/handle_cpu_count_exception

Handle cpu count exception
RF: Replacing reconst.odf with reconst.peaks whenever it is necessary
RF: Modified examples to uses reconst.peaks
BF: added peaks.py to git
RF: separated test_odf.py to test_odf.py and test_peaks.py for consistency with the new peaks.py file
Merge pull request #263 from Garyfallidis/fix_pfm_b_matrix

Refactoring peaks calculations to be out of odf.py
removed the ravel_peak parameter in peaks_from_model call
fixed temp files issue in peaks_from_model parallel
Merge pull request #264 from gabknight/peak_from_model_tmp_files

peak_from_model tmp files
added optional B, Binv params to peaks_from_model
fixed typos
Merge pull request #265 from gabknight/peak_from_model_issue253

Peak from model issue #253
BF - join pool before trying to delete temp directory
Merge pull request #266 from MrBago/bf_delete_tempdir

BF - join pool before trying to delete temp directory

Fixes gh-265. It seems that Windows was trying to delete the temp directory before all the workers had fully exited.