Update readme default version instructions

I was trying to set this and found it confusing, thought I needed to write `node`:

```
$ nvm alias default node 4.0
default -> node (-> v6.2.2)
$ nvm alias default 4.0
default -> 4.0 (-> v4.0.0)
```
This commit is contained in:
Amy Lam 2016-06-30 11:22:06 -07:00 committed by GitHub
parent a24ff3e605
commit 5c769d8aa4

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@ -152,9 +152,9 @@ To restore your PATH, you can deactivate it:
nvm deactivate nvm deactivate
To set a default Node version to be used in any new shell, use the alias 'default': To set a default Node version to be used in any new shell, use the alias 'default' and the version number you want to use, e.g. 5.0:
nvm alias default node nvm alias default 5.0
To use a mirror of the node binaries, set `$NVM_NODEJS_ORG_MIRROR`: To use a mirror of the node binaries, set `$NVM_NODEJS_ORG_MIRROR`: