Using an `nvm_curl` function instead of `curl`/`wget` directly.
Use `nvm_curl` instead of `curl` directly, which has a `wget` fallback.
Add some more curl → wget argument munging
Make `nvm_curl` do a runtime check if `curl` is available.
Make sure both wget and curl work.
Removing an extra "echo"
fix nvm_curl arguments for stdout
Merge pull request #459 from koenpunt/curl_wget_handling

fix nvm_curl arguments for stdout
Merge pull request #452 from creationix/curl_wget_handling

Better combo curl/wget handling