Update unsupported browser versions

README.md

@@ -64,9 +64,9 @@ Another driving factor is performance and the fact that everything happens in th
 DevDocs being a developer tool, the browser requirements are high:
 
 * Recent versions of Firefox, Chrome, or Opera
-* Safari 9.1+
-* Edge 16+
-* iOS 10+
+* Safari 11.1+
+* Edge 17+
+* iOS 11.3+
 
 This allows the code to take advantage of the latest DOM and HTML5 APIs and make developing DevDocs a lot more fun!
 

assets/javascripts/templates/error_tmpl.coffee

@@ -57,9 +57,9 @@ app.templates.unsupportedBrowser = """
     <p class="_fail-text">DevDocs is an API documentation browser which supports the following browsers:
     <ul class="_fail-list">
       <li>Recent versions of Firefox, Chrome, or Opera
-      <li>Safari 9.1+
-      <li>Edge 16+
-      <li>iOS 10+
+      <li>Safari 11.1+
+      <li>Edge 17+
+      <li>iOS 11.3+
     </ul>
     <p class="_fail-text">
       If you're unable to upgrade, we apologize.

views/unsupported.erb

@@ -12,7 +12,7 @@
     <ul class="_fail-list">
       <li>Recent versions of Firefox, Chrome, or Opera</li>
       <li>Safari 11.1+</li>
-      <li>Edge 16+</li>
+      <li>Edge 17+</li>
       <li>iOS 11.3+</li>
     </ul>
     <p class="_fail-text">