Merge pull request #14 from JimHokanson/master

Updates to documentation
Added example experiment file

Added example experiment file
Also, finished refactoring of "WormVideoFile" class to
"WormExperimentFile" in wormExample.py
pycache update
Added link to YouTube worm video
Update README.md
wrapped the example code into a function
refactored variable name to "skeleton"
Fixed dropped frames using interpolation

Fixed dropped frames issue, by means of the new method
WormExperimentFile.interpolate_dropped_frames, which linearly
interpolates between the frames with NaN values, using numpy.interp
Made a hard-coded value (49) dynamic
Refactored code to by more python-like

used underscores rather than camelCase more consistently.  Also changed
the first comment in each method to use """ """
also renamed exampleFile.py to example_file.py
Added get_features_rewritten.py
Added WormFeatures class

Also renamed experiment_file.py to WormExperimentFile.py, which
corresponds with the name of the class WormExperimentFile contained
within.

Also added masterEigenWorms_N2.mat example file
Fixed a simple syntax error in the import statement

And a couple of other small errors
Fixed the wormpy module import code

Now you can do "import wormpy" and get all of the content, thanks to an
implemented __init__.py file.
housecleaning on .pyc files
Started NormalizedWorm

Also created outline for WormFeatures.get_morphology_features()
Rewrote get_features_rewritten as wormpy_example

I more clearly wrote it as code that's merely intended to illustrate the
use of the wormpy module.
I added all functionality from example_worm into wormpy_example.
I like the name wormpy_example instead of get_features_rewritten which
is a bit cryptic.
Refactored classes to avoid HDF5 file

Instead, NormalizedWorm loads directly from norm_obj.mat in  the DropBox
worm_data\...... directory.
NOTE: wormpy_example.py is currently broken until I fix the loading of
this file completely, by figuring out how to use scipy.io.loadmat
Added cross-platform access to the worm example

Now it will decide dynamically what path to use depending on whether
it's Michael, Jim's PC, or Jim's Mac.
Quick TODO add