remove map_coords, mayavi standard dep, gitignore
__init__.py still had multivariate_normal
remove multivariate_normal from docs
Fixes bug in pca related to noise variance computation
Merge remote-tracking branch 'upstream/master' into rmmultivar

Conflicts:
	menpo/model/pca.py
Merge pull request #321 from jabooth/rmmultivar

remove multivariate_normal hack, mayavi standard dep, gitignore