Update nvm.sh

small fix fo nvm help info
Update nvm.sh

Fix - this line should be nvm use 0.10 - no 'v', and no incremental version number.
Update nvm.sh

fix https://github.com/creationix/nvm/pull/330
Update nvm.sh

fix#https://github.com/creationix/nvm/pull/330
Merge pull request #330 from mibamur/patch-1

Update nvm.sh