Add Accrescent to Readme

Author: SailReal

README.md

@@ -13,7 +13,8 @@ Cryptomator for Android is currently available in the following  distribution ch
 2. [Using Cryptomator's Website](https://cryptomator.org/android/)
 3. [Using Cryptomator's F-Droid Repository](https://cryptomator.org/android/)
 4. [Using F-Droid's Main Repository](https://f-droid.org/en/packages/org.cryptomator.lite)
-5. Building from source using Gradle (instructions below)
+5. [Using Accrescent](https://accrescent.app/app/org.cryptomator)
+6. Building from source using Gradle (instructions below)
 
 ## Building