locked gemfile
extract out http_get and http_post methods
extract out save_cookie_store, inline calls to `http`
fix test: ErrorChecker does belong in Client
save cookie store needs a wrapper, clients might depend on it
fix bug, this line shouldn't be here
move public facing method up
add measuring http client
make http timing stats prefix non optional, shrink the enforced prefix
Merge pull request #33 from estately/measure_http_request_times

Optionally measure http request times