add Chelsea to Creators section in README

Author: etpinard

README.md

@@ -89,6 +89,7 @@ plotly.js charts can also be created and saved online for free at [plot.ly/plot]
 |**Mikola Lysenko**| [@mikolalysenko](https://github.com/mikolalysenko) | [@MikolaLysenko](https://twitter.com/MikolaLysenko) |
 |**Ben Postlethwaite**| [@bpostlethwaite](https://github.com/bpostlethwaite) | |
 |**Chris Parmer**| [@chriddyp](https://github.com/chriddyp) | |
+|**Chelsea Douglas**| [@cldougl](https://github.com/cldougl) | |
 
 ## Copyright and license