readBuffer: handle no argument case
make remaining tests pass
readBuffer: make sure test actually passes a buffer
add readFile API
tweak packaging, add npm test target
parse multiple message grib files
remove dead code
get basic section parsing working
split parser into separate library file
fix flux.grb parsing (allow junk at end of file)
test success/failure of parsing all samples
move over to using node-binary
test reference date
add interpretation of production status and data type
check field-count per message
add stub implementation of all grid templates