Fixes and closes #14 by using apply and POSIXct and ifelse
Fixed 19 days in leap February to 29
resolve conflict

Merge branch 'master' of https://github.com/jasonpbecker/eeptools into jasonpbecker-master

Conflicts:
	R/age_calc.R
Merge branch 'master' of github.com:jknowles/eeptools