Use bash.
.bash_profile should have the following:
export
NVM_DIR=
"$HOME/.nvm"
[ -s
"$NVM_DIR/nvm.sh"
] && \.
"$NVM_DIR/nvm.sh"
# This loads nvm
[ -s
"$NVM_DIR/bash_completion"
] && \.
"$NVM_DIR/bash_completion"
# This loads nvm bash_completion