Update README.md

andreivictor · web-flow · commit bf94a1d0374d · 2017-09-09T21:51:51.000+03:00
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@@ -5,6 +5,11 @@ Custom classes can be added using `customClass` parameter or via `data-custom-cl
 
 There are 5 predefined custom classes in CSS: `.tooltip-primary`, `.tooltip-success`, `.tooltip-info`, `.tooltip-warning`, `.tooltip-danger`.
 
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 ## Usage
 
 - Use `data-custom-class` attribute:
