DNVM command not found on MAC OSX

After all the emotion with the https://code.visualstudio.com/ release I just couldnt believe it and I download it on a MAC and started trying it.

However I got stuck. I follow the instructions https://github.com/aspnet/home#os-x

brew tap aspnet/dnx
brew update
brew install dnvm

Everything but when running

dnvm upgrade

I just got command not found

Solution: exec source dnvm.sh

:) And Enjoy

P.D.
At this time only dnx . kestrel works hover I had to use:

export MONO_MANAGED_WATCHER=disabled

command in order for this to run, due to a mono framework bug