Merge pull request #72 from Ingener74/newFeature_heartRateCounter

New feature heart rate counter
Merge branch 'master' of github.com:Ingener74/HeartRateMonitor into newFeature_fftwHeartRateRecognizer
Merge branch 'newFeature_fftwHeartRateRecognizer' of github.com:Ingener74/HeartRateMonitor into newFeature_fftwHeartRateRecognizer
small changes, need new types of data