Updated PHP version in documentation.

skipperbent · Nov 28, 2017 · 1676767 · 1676767
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commit 1676767
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diff --git a/README.md b/README.md
@@ -13,7 +13,7 @@ This library is stable, maintained and are used by many sites, including:
 - [BookAndBegin.com](https://bookandbegin.com)
 
 **Requirements:**
-- PHP version 5.5 or higher is required.
+- PHP version 7.0 or higher is required.
 
 #### Feedback and development