docs: add postinstall instructions to Vite and Nuxt READMEs

[bokub]

• Add the "Nx dependency graph" paragraph to Vite and Nuxt READMEs (they were missing)
• Create a binary alias so the postinstall script is shorter in the package.json (the old command still works :slightly_smiling_face: )

[bokub]

Since we are updating the documentation to point to the binary, we should update the schematics to use the binary over the node script. Let me know if you need any help with that!

Sorry but I don't understand what you mean

[ZachJW34]

When we scaffold a new application, we will add this post-install script if it is not already there. You can see that here (and in the other packages, I need to make some reusable libs). The binary script looks better, so we should update the generators to add the binary script vs the node script.

[bokub]

Oh OK, got it. I'll try to do that tomorrow 👍

[bokub]

@ZachJW34 Done :heavy_check_mark:

[bokub]

I have no idea why the tests are failing in CircleCI, they are not failing locally...