Merge pull request #4 from arielcamus/patch-1

Updated README with usage for Vue >2.x

Author: imcvampire

README.md

@@ -19,10 +19,14 @@ A filter for Vuejs to truncate string
 
 ## Usage:
 
+### Vue 1.x
  ```html
   {{ text | truncate 100 '....' }}
  ```
- 
+### Vue 2.x
+ ```html
+  {{ text | truncate(100) }}
+ ```
 ## Params:
 - length (Number): Text will be truncated if it's length is more than this param.