To increase the usefulness of the example, I added the measurement of
the complete cycle, which is the important figure. The reading time
itself, though interesting, is not the limiting factor according to the
datasheet.
Additionally, I updated the printing instructions to create a nicely
formatted output and limited the number cycles necessary to reach "del
== 0".
detection of the zero/one is doen by measuring the whole bit LOW+HIGH
+ improved wait for acknowledge
+ merged two loopCounters into one.
+ layout
+ dht22_test sketch collects statistics (every 20 reads)
