python lint
groom power_wrapper flags
generalize power_wrapper to different networks and inputs

generalize from the imagenet reference to other detection networks:
- refactor to configure for a given net and data source
- determine dimensions of net input and output automatically from blobs
note power_wrapper TODOs
groom power_wrapper flags (cont'd)
promote power_wrapper to 'detection' submodule
Merge pull request #56 from shelhamer/detection-wrapper

Make detection module for python wrapper