update readme

Gruntfile.js

@@ -95,8 +95,7 @@ module.exports = function (grunt) {
             options: {
                 bump: false,
                 commit: false,
-                add: false,
-                tagName: 'Inputmask <%= version %>'
+                add: false
             }
         },
         nugetpack: {

README.md

@@ -96,6 +96,11 @@ If you like to automatically bind the inputmask to the inputs marked with the da
 npm install inputmask --save
 ```
 
+##### Install the latest beta version
+```
+npm install inputmask@next --save
+```
+
 #### In your modules
 If you want to include the Inputmask and all extensions.
 ```