Added info about common UI problems if IE Compatibility View mode is enabled.

doc/install/requirements.md

@@ -106,4 +106,8 @@ On a very active server (10,000 active users) the Sidekiq process can use 1GB+ o
 - Firefox (Latest released version and [latest ESR version](https://www.mozilla.org/en-US/firefox/organizations/))
 - Safari 7+ (known problem: required fields in html5 do not work)
 - Opera (Latest released version)
-- IE 10+
+- IE 10+
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+
+### Common UI problems with IE
+
+If you experience UI issues with Internet Explorer, please make sure that you have the `Compatibility View` mode disabled.
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