From c8a7f56261b7ddc0b80398e4d1f2e8bbd566ba2d Mon Sep 17 00:00:00 2001
From: Michael Salaverry <barakplasma@gmail.com>
Date: Tue, 5 Mar 2019 07:41:46 +0200
Subject: [PATCH] Documentation: added PropTypes for heatmap prop (#716)

* Documentation: added PropTypes for heatmap prop

This PR improves the documentation of the heatmap prop by adding types.
I don't mind adding PropTypes validation to this prop as well if you are interested in that.

* Update API.md

I added some spacing between the interface and the example snippet.
I also added a link to the example I wrote for the other repository. I think we should delay this PR until that example is live. That way, the new Demo link will go to live functioning code rather than no where.
---
 API.md | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/API.md b/API.md
index c39549d..6c1ee56 100644
--- a/API.md
+++ b/API.md
@@ -347,9 +347,25 @@ For more details see the [google documentation](https://developers.google.com/ma
 
 ### Heatmap Layer
 
-For enabling heatmap layer, just add `heatmapLibrary={true}` and provide data for heatmap in `heatmap` as props.
+To use the heatmap layer, add `heatmapLibrary={true}` to add the visualizations library, and provide the data&configuration for the heatmap in `heatmap` as props.
 
-#### Example
+The typescript interface for the heatmap prop is as follows:
+```typescript
+interface heatmapProp {
+    positions: {
+        lat: Number;
+        lng: Number;
+        weight?: Number;
+    }[];
+    options: {
+        radius?: number;
+        opacity?: number;
+        /* other options directly from Google Heatmaps API */
+    };
+}
+```
+
+#### Example [Demo](https://google-map-react.github.io/google-map-react-examples/heatmap)
 
 ```javascript
 <GoogleMapReact