Merge pull request #7 from Dessimat0r/dht22_tunning

Fixed byte datatype for bits[..], moved sum to local
Merge pull request #8 from niesteszeck/dht22_tunning

Dht22 tunning merge into master
Merge commit 'e63cc6d07dd7e503e0aca1ae511c068a579d5607' into dht22_tunning