Merge pull request #55 from gtataranni/patch-1

fix typo in readme

Author: ardera

README.md

@@ -115,7 +115,7 @@ of the flutter app you're trying to run.
 ## Dependencies
 ### flutter engine
 flutter-pi needs `libflutter_engine.so` and `flutter_embedder.h` to compile. It also needs the flutter engine's `icudtl.dat` at runtime.
-You have to options here:
+You have two options here:
 
 - you build the engine yourself. takes a lot of time, and it most probably won't work on the first try. But once you have it set up, you have unlimited freedom on which engine version you want to use. You can find some rough guidelines [here](https://medium.com/flutter/flutter-on-raspberry-pi-mostly-from-scratch-2824c5e7dcb1). [Andrew jones](https://github.com/andyjjones28) is working on some more detailed instructions.
 - you can use the pre-built engine binaries I am providing [in the _engine-binaries_ branch of this project.](https://github.com/ardera/flutter-pi/tree/engine-binaries). I will only provide binaries for some engine versions though (most likely the stable ones).