initial version of obj exporter
add tests for export_obj
move menpo.image.feature -> menpo.feature
move features to menpo.features.feature
steps to remove featurefunctions
remove compute_features entirely
remove str option for functions in fitmultilevel
remove all .feature calls from Menpo
most issues cleaned up
Merge remote-tracking branch 'upstream/master' into rmfeatures

Conflicts:
	menpo/feature/features.py
	menpo/fitmultilevel/aam/builder.py
	menpo/fitmultilevel/clm/builder.py
	menpo/fitmultilevel/sdm/trainer.py
	menpo/image/feature/base.py
getting closer, tests failing
remove generated cpp
getting there
landmark_file_paths added
improve docs, fix tests
Change landmark group indexing

Now when you index into a landmark group it returns the sliced
pointcloud instead of a new landmark group. This removes
a lot of spurious lms calls throughout the code.
Merge remote-tracking branch 'upstream/master' into lmioimp

Conflicts:
	menpo/io/__init__.py
fix test checking for landmark group
Merge pull request #401 from jabooth/lmioimp

Dogfood landmark_resolver in menpo.io
Merge remote-tracking branch 'upstream/master' into landmarks_fixes