User folder with accented characters breaks nvm

[nelero]

Issue:
My folder user has accented characters.
When running nvm something, i got an error message : could not be found or does not exist. Exiting.

How To Reproduce:

1. Create a Windows user with accented character in it. The user folder will have the accented characters.
2. Open a terminal
3. Run nvm list
4. See error message

Expected Behavior:
Nvm should be found and running.

Screenshots:

C:\Users\Aurélien>nvm list
C:\Users\Aur�lien\AppData\Roaming\nvm could not be found or does not exist. Exiting.

No installations recognized.

C:\Users\Aurélien>

[coreybutler]

Duplicate of #887.