pulled v2 stuff into its own package, added header extraction

hey, thought i'd push this now, so Jonathan can get the header values started

e.g. http://localhost:8888/j3mheader/4c20d05a772723f1b5e97166ca1f3709/

lightmeter timeline:
http://localhost:8888/lightMeter/4c20d05a772723f1b5e97166ca1f3709/

whole j3m
http://localhost:8888/j3mretrieve/4c20d05a772723f1b5e97166ca1f3709/