[julia-users] Escher image update

[Yakir Gagnon]

I have some widgets that run imagemagick updating images in `assets/`, and 
the only way I can get those to update with `image` is to change their 
names... 
So if I just do this:
```julia
run(`convert a.jpg <some settings> assets/a.jpg`)
image("assets/a.jpg")
```
the image doesn't get updated. But this craziness works:
```julia
name = rand(Int)
run(`convert a.jpg <some settings> assets/$name.jpg`) 
image("assets/$name.jpg")
```
Isn't there a better way?