update Creators list

- split into "Active" and "Hall of Fame"
- add Antoine, Mojtaba and Robert

Author: etpinard

README.md

@@ -154,13 +154,23 @@ plotly.js charts can also be created and saved online for free at [plot.ly/creat
 
 ## Creators
 
+### Active
+
 |   | Github | Twitter |
 |---|--------|---------|
 |**Alex C. Johnson**| [@alexcjohnson](https://github.com/alexcjohnson) | |
 |**Étienne Tétreault-Pinard**| [@etpinard](https://github.com/etpinard) | [@etpinard](https://twitter.com/etpinard) |
+|**Antoine Roy-Gobeil** | [@antoinerg](https://github.com/antoinerg) | |
+|**Mojtaba Samimi** | [@archmoj](https://github.com/archmoj) | |
+
+### Hall of Fame
+
+|   | Github | Twitter |
+|---|--------|---------|
 |**Mikola Lysenko**| [@mikolalysenko](https://github.com/mikolalysenko) | [@MikolaLysenko](https://twitter.com/MikolaLysenko) |
-| **Dmitry Yv.** | [@dy](https://github.com/dy) | [@DimaYv](https://twitter.com/dimayv)|
 |**Ricky Reusser**| [@rreusser](https://github.com/rreusser) | [@rickyreusser](https://twitter.com/rickyreusser) |
+|**Dmitry Yv.** | [@dy](https://github.com/dy) | [@DimaYv](https://twitter.com/dimayv)|
+|**Robert Möstl** | [@rmoestl](https://github.com/rmoestl) | [@rmoestl](https://twitter.com/rmoestl) |
 |**Robert Monfera**| [@monfera](https://github.com/monfera) | [@monfera](https://twitter.com/monfera) |
 |**Nicolas Riesco**| [@n-riesco](https://github.com/n-riesco) | |
 |**Miklós Tusz**| [@mdtusz](https://github.com/mdtusz) | [@mdtusz](https://twitter.com/mdtusz)|