D3 probelm

Please do not submit support requests or "How to" questions here. For that, go to [StackOverflow](https://stackoverflow.com/questions/tagged/event-drops).

**What you were expecting:**

After installing d3, and following README, I expected that I should work.

**What happened instead:**
There is a dependecy on d3. I don't know where this d3 is coming from?

index-trusted.js:67589 Uncaught Error: Cannot find module "d3/build/d3"
at webpackMissingModule (index-trusted.js:67589)
at Object.defineProperty.value (index-trusted.js:67589)
at __webpack_require__ (index-trusted.js:20)
at Object._typeof (index-trusted.js:241437)
at __webpack_require__ (index-trusted.js:20)
at Object.defineProperty.value (index-trusted.js:220998)
at __webpack_require__ (index-trusted.js:20)
at Object. (index-trusted.js:220880)
at __webpack_require__ (index-trusted.js:20)
at _typeof (index-trusted.js:63)

**Steps to reproduce:**
import * as d3 from 'd3/build/d3';

**Related code:**

```
import * as d3 from 'd3/build/d3';
import eventDrops from 'event-drops';

export default class EventTimeline extends Component {
constructor(props) {
super(props);
this.eventElem = null;
}
componentDidMount() {
//console.log(this.props.data, this.props.tooltipSpec);
if (this.props.tooltipSpec !== null && this.props.data !== null) {
this.createEventTimeline();
}
}
createEventTimeline() {
const data = this.props.data;
const tooltipSpec = this.props.tooltipSpec;
this.tooltipNode
.classed('tooltip', true)
.style('opacity', 0);
const chart = eventDrops({
d3,
zoom: {
```

**Other information:**

**Environment**

* EventDrops version
1.3.0
* Browser:
Chrome
* Stack trace (in case of a JS error):

Start with the README installation and import instructions for EventDrops 1.3.0, then inspect how the d3 dependency is declared and resolved. Reproduce the webpack error using the reported `import * as d3 from 'd3/build/d3'` entry point; done means the documented setup resolves d3 and the EventDrops example loads without the missing-module error.

Written by the indexing model from the issue text.