Michael Salaverry 3d78dd9cb4 Fix: Update heatmap layer when heatmap positions prop changes (#728)
* improvement: switched from defining API key in multiple places to one place

* now generating random readings

* fix: a change in heatmap positions now updates the map accordingly

* docs: added comment to explain that the developer should use their own key
2019-04-01 12:47:19 -03:00
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