Added gradio app for getting started tutorial (#637)

* Added gradio app for getting started tutorial

* Added headline

* Added the link to the gradio app in the docs

* Added the link to demo app

docs/getting_started.md

@@ -1,5 +1,9 @@
 # Getting started
 
+# Demo
+
+[Try out the DeepForest models online!](https://huggingface.co/spaces/weecology/deepforest-demo)
+
 ## How do I use a pretrained model to predict an image?
 
 ```python
@@ -19,6 +23,7 @@ plt.imshow(img[:,:,::-1])
 
 ![](../www/getting_started1.png)
 
+
 ** please note that this video was made before the deepforest-pytorch -> deepforest name change. **
 
 <div style="position: relative; padding-bottom: 62.5%; height: 0;"><iframe src="https://www.loom.com/embed/f80ed6e3c7bd48d4a20ae32167af3d8c" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;"></iframe></div>