Update bootstrap
Update bootstrap

Use env(1) to locate shell binary (see http://en.wikipedia.org/wiki/Shebang_%28Unix%29#Portability).

azalea/dotfiles,jegtnes/dotfiles,constantx/dotfiles,constantx/dotfiles,constantx/dotfiles,jegtnes/dotfiles,WideEyeLabs/dotfiles,werme/dotfiles,azalea/dotfiles,constantx/dotfiles,Dextro/dotfiles,polymetis/dotfiles,Dextro/dotfiles,WideEyeLabs/dotfiles,WideEyeLabs/dotfiles,polymetis/dotfiles,polymetis/dotfiles,werme/dotfiles,WideEyeLabs/dotfiles,constantx/dotfiles