Is your feature request related to a problem? Please describe.

No. Feature request.
I'd like the version of the lib easily exposed to consumers.

Describe the solution you'd like

I'd like lib/axios.js to add the following:

var VERSION = require('./env/data').version;
// ...
axios.VERSION = VERSION;

Describe alternatives you've considered

Without this, I'm forced to dig around in node_modules trying to find axios/package.json or hard code the version in my code and hope it stays in sync.

Additional context

My primary use is for constructing a user-agent header, I'd prefer to include axios and it's version.
When writing apps that call between my services, I find debugging is easier when I can include a proper user agent header.

const defaultUA = `MyOrg MyService/${pkg.version} (Axios/${axios.VERSION} Node/${process.versions.node})`;

const instance = axios.create({
  // ...opts
  headers: { 'User-Agent': defaultUA }
});