Default to installing 'nodejs', which is what most pkg managers use.
Default to installing 'nodejs', which is what most pkg managers use.

I made this change to fix the dep for arch, which uses 'nodejs'. But most other systems (yum & gentoo among others) use 'nodejs' too. One exception is freebsd, which uses 'node' like brew; I've added a case for it here.

victorklos/babushka,victorklos/babushka,victorklos/babushka