Generate chart by mermaid script.

[SamirSales]

At the moment, the only way to generate a graph is by inserting an object. Would be cool if we could generate graph by text insertion, as the example below:

graph TD
  A[Christmas] -->|Get money| B(Go shopping)
  B --> C{Let me think}
  C -->|One| D[Laptop]
  C -->|Two| E[iPhone]
  C -->|Three| F[fa:fa-car Car]