Update manual Android steps to use new package name

Co-authored-by: foxvector <[email protected]>
Co-authored-by: checkmate17 <[email protected]>

README.md

@@ -146,7 +146,7 @@ https://github.com/dooboolab/react-native-iap
 
 #### Android
 1. Open up `android/app/src/main/java/[...]/MainActivity.java`
-  - Add `import com.reactlibrary.RNIapPackage;` to the imports at the top of the file
+  - Add `import com.dooboolab.RNIap.RNIapPackage;` to the imports at the top of the file
   - Add `new RNIapPackage()` to the list returned by the `getPackages()` method
 2. Append the following lines to `android/settings.gradle`:
   	```