Merge pull request #10 from openworm/master

From M to J
Loading morphology from disk
Started organization of posture features
Working on posture features - eccentricity and orientation
Nearly finished with eccentricity and orientation
Finished eigenworms
Started # kinks function
get_worm_kinks finished
Working on amplitude/tracklength/wavelength, finished directions, currently in utils.maxPeaksDist (need to rename)
Renamed maxPeaksDist to max_peaks_dist
Finished amplitude,wavelength,track length function
working on loading and comparison to old values
Merge commit '7be9bb399c34c49ac639759d8a2add4438415a1f'

Conflicts:
	wormpy/WormFeatures.py
	wormpy/feature_helpers.py
Merge pull request #51 from JimHokanson/master

Merging Jim's changes back to Openworm