remove conversion to UTC, just report time observed

Parsers should not add fictitious data.
simplify test
convert rest of tests to simpler streams

Easier to write and maintain this way.
remove TIME_ZONE from test parser initialization
remove timezone handling altogether
remove dead/commented code
run from commandline without tz

Don't mess with timezones in the parsers.
exercise strict control over http requests

The request module uses a global pool and configuration for requests.
These changes exercise stricter control over how these requests behave
so that the module's use of http is consistent, regardless of http
requests other modules in the same process might be making.
clean up dead code
whitespace nit
remove remants of timezone
add coveralls badge
test in browser, using testling-ci

Include badge, re-organize tests to be friendly to browser tests.
bust github cached image for testing-ci
Merge pull request #1 from tidepool-org/bewest/minus-time-interp

Bewest/minus time interp