README.md in file_validators-2.1.0 vs README.md in file_validators-2.2.0.beta1

@@ -10,13 +10,16 @@
 File Validators gem adds file size and content type validations to ActiveModel.
 Any module that uses ActiveModel, for example ActiveRecord, can use these file validators.
 
 ## Support
 
-* ActiveModel versions: 3 and 4.
-* Rails versions: 3 and 4.
+* ActiveModel versions: 3.2, 4 and 5.
+* Rails versions: 3.2, 4 and 5.
 
+As of version `2.2`, activemodel 3.0 and 3.1 will no longer be supported.
+For activemodel 3.0 and 3.1, please use file_validators version `<= 2.1`.
+
 It has been tested to work with Carrierwave, Paperclip, Dragonfly, Refile etc file uploading solutions.
 Validations works both before and after uploads.
 
 ## Installation
 
@@ -251,11 +254,11 @@
 $ rake
 $ rake test:unit
 $ rake test:integration
 
 # test different active model versions
-$ appraisal install
-$ appraisal rake
+$ bundle exec appraisal install
+$ bundle exec appraisal rake
 ```
 
 ## Problems
 
 Please use GitHub's [issue tracker](http://github.com/musaffa/file_validations/issues).