Merge branch 'release/2.0.1'

Preparing next release

Now speedtest-csv --debug also outputs the speedtest-cli output (Issue #19)

Now speedtest-csv --help does a better job identifying the version of speedtest-cli used (Issue #18)

BUG FIX: In some cases, the reported download / upload speeds would be prefixed by stray periods, e.g. '.67.91' (Issue #19)

Bump develop version

spelling typo

Merge branch 'master' into develop

Example has stray and unnecessary options

Merge tag '2.0.0' into develop

Merge branch 'release/2.0.0'

HELP: Reordered / restructured options

Prepare next release

Display speedtest-csv version also in --help (at the very top)

Mention speedtest-cli (>= 1.0.0) built-in CSV support