Corrected HOWITWORKS changes
Fixed inconsistent language in binary
Made recommended revisions to Worker
Refactored tests to test both blocking and polling workers
Fixed setting of $polling variable
Made recommended revisions to Worker
Refactored tests to test both blocking and polling workers
Allowed for deprecated BLOCKING env var
Renamed 'polling' to 'nonblocking' throughout code
Merge branch 'blpop-by-default'
Updated timeouts on testing workers

... to decrease testing time
Merge branch 'blpop-by-default'