add .gitignore
add path buffer, user location initialization, plots

Use shapely to generate polygon with some buffer around the union of
path lines. Use this region to generate initial user locations
somewhere along the path, and add noise to mimic sensor
uncertainty. This generates initial list of user locations. Use
descartes with shapely polygons to display path area, and add plot
functions for pathPoly and UserLocations.
remove *.pyc files from repo