This is an rvm issue. Suggestions on rvm home page did not work. Solution: Uninstall rvm and use rbenv to manage ruby versions.
Add the following to ~/.bashrc
[[ -s "$HOME/.profile" ]] && source "$HOME/.profile" # Load the default .profile
rt PATH="$HOME/.rbenv/bin:$PATH"
eval "$(rbenv init -)"
export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"
source ~/.bashrc
Say 'Yes' to the prompt.
which bundle showed no output. Run: gem install bundle
References:
https://gorails.com/forum/rbenv-bundle-command-not-found
https://gorails.com/setup/osx/10.10-yosemite