alias rnand='react-native run-android'
alias rnios4s='react-native run-ios --simulator "iPhone 4s"'
alias rnios5='react-native run-ios --simulator "iPhone 5"'
alias rnios5s='react-native run-ios --simulator "iPhone 5s"'
alias rnios='react-native run-ios'
alias rnlink='react-native link'