Add Rustybeer API

Beer brewing tools, still work in progress but more functionality coming
all the time

README.md

@@ -519,6 +519,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Open Brewery DB](https://www.openbrewerydb.org) | Breweries, Cideries and Craft Beer Bottle Shops | No | Yes | Yes |
 | [Open Food Facts](https://world.openfoodfacts.org/data) | Food Products Database | No | Yes | Unknown |
 | [PunkAPI](https://punkapi.com/) | Brewdog Beer Recipes | No | Yes | Unknown |
+| [Rustybeer](https://rustybeer.herokuapp.com/) | Beer brewing tools | No | Yes | No |
 | [Spoonacular](https://spoonacular.com/food-api) | Recipes and Food product | `apiKey` | Yes | Unknown |
 | [TacoFancy](https://github.com/evz/tacofancy-api) | Community-driven taco database | No | No | Unknown |
 | [The Report of the Week](https://github.com/andyklimczak/TheReportOfTheWeek-API) | Food & Drink Reviews | No | Yes | Unknown |