chore: Adding instructions about how use the master branch

README.md

@@ -10,13 +10,20 @@ This gives you the power to prioritize our work and support the project contribu
 
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-
 ## Getting started
 
 ### Mostly automatic install
-1. `npm install react-native-share --save`
+1. `yarn add react-native-share`
 2. `react-native link react-native-share`
 
+#### How to use master branch?
+
+We recommend using the releases from npm, however you can use the master branch if you need any feature that is not available on NPM. But by doing this you end up being able to test less stable versions of the project. 
+
+**yarn**: `yarn add react-native-share@git+https://git@github.com/react-native-community/react-native-share.git`
+
+**npm**: `npm install --save react-native-share@git+https://git@github.com/react-native-community/react-native-share.git`
+
 ### Manual install
 
 `npm install react-native-share --save`