Make sure value_from_raw always returns float
	Flush log file before the request
	No need to flush log files in log view
Add link to home in calibration view
	Add Anil's email address
Merge branch 'master' of https://github.com/chuankai/hx711_app
1. sends mail only when @mail_notification is true
2. configure the maill address in main app
	Fixed send mail bug
1. sends mail only when @mail_notification is true
2. configure the maill address in main app
	Use Anil's mail address
Merge branch 'master' of https://github.com/chuankai/hx711_app
Fix typo
Merge branch 'master' of https://github.com/chuankai/hx711_app
	Remove comments
	add systemd unit file
Merge branch 'master' of https://github.com/chuankai/hx711_app
	Remove dependency on sysfs for the simulation
	Remove unused method
Merge branch 'sim' of https://github.com/chuankai/hx711_app into sim

Conflicts:
	weight_log.rb