Creates circle geometry

```
var createCircle = require('primitive-circle')
var circle = createCircle(1, 32)
//circle = { positions: [[x,y], ...], cells: [[0, 1], [1,2], ...] }
```

`createCircle(r, segments)`

`r`

- radius of the circle`segments`

- number of segments the circle will be made of

Returns geometry object with positions [x, y] and cells [i, j]

*Note: Points will be ordered clock-wise starting at 3pm*

MIT, see LICENSE.md for details.