Updated the readme

README.md

@@ -1,7 +1,7 @@
 # angular-filters
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 Useful filters for AngularJS
 
@@ -42,6 +42,24 @@ Result:
 1, 2
 ```
 
+###percentage
+Returns a number formatted as a percentage. Numbers between 0 and 1 will be rounded up to 10th decimal place.<br/>
+
+```html
+{{123 | percentage}}
+{{null | percentage}}
+{{60.0 | percentage}}
+{{0 | percentage}}
+{{0.000001 | percentage}}
+
+Result:
+123%
+0%
+60%
+0%
+0.1%
+```
+
 ###replace
 Replaces string content<br/>