Align auto-import with README examples

[donaldpipowitch]

Is your feature request related to a problem? Please describe.
When you copy'n'paste examples from the README into you code, you can't easily auto-import (e.g. in VS Code) the Axios lib.

Describe the solution you'd like
I'll rename the default export in the index.d.ts so it alignes with the official documentation.

Change this:

To this:

Describe alternatives you've considered
Change all the official examples to use Axios instead of axios ;)

Additional context
Nothing.