update README & add .swift-version file

EurekaCommunity · Sep 27, 2017 · 6aa28e2 · 6aa28e2
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diff --git a/.swift-version b/.swift-version
@@ -0,0 +1 @@
+4.0
diff --git a/README.md b/README.md
@@ -54,7 +54,7 @@ class ViewController: FormViewController {
 ## Requirements
 
 * iOS 8.0+
-* Xcode 8.3+
+* Xcode 9.0+
 
 ## Getting involved