Based on flowchart.js:http://adrai.github.io/flowchart.js/
#### Using FlowChart
setting:
{
flowChart : true
}
#### Example
```flow
st=>start: User login
op=>operation: Operation
cond=>condition: Successful Yes or No?
e=>end: Into admin
st->op->cond
cond(yes)->e
cond(no)->op
```
{ flowChart : true}