Fix typo in README (#185)

rashedmyt · stuartmorgan · commit 560305f3cff0 · 2018-12-28T08:16:50.000-08:00
diff --git a/README.md b/README.md
@@ -1,6 +1,6 @@
 # Desktop Embedding for Flutter
 
-This purpose of this project is to support building
+The purpose of this project is to support building
 applications that use [Flutter](https://github.com/flutter/flutter)
 on Windows, macOS, and Linux.
 
