README.md in hotch-0.0.3 vs README.md in hotch-0.1.0

@@ -65,9 +65,25 @@
 
 Set envvar `HOTCH_VIEWER` to enable auto-view after profiling.
 
     $ export HOTCH_VIEWER=eog # use Gnome viewer
 
+### Filter
+
+Set envvar `HOTCH_FILTER` to (regexp) filter frames by its name.
+
+    $ export HOTCH_FILTER=ROM
+    $ export HOTCH_FILTER=Bundler
+
+### Minitest integration
+
+Load `hotch/minitest` in your `test/test_helper.rb` like this:
+
+```ruby
+require 'minitest/autorun'
+require 'hotch/minitest'
+```
+
 ## Caveat
 
 ### Using with bundler
 
 If you use `hotch` in project managed by `bundler` you have to specify `hotch` in `Gemfile`.(see Installation section above)