README.md in sniffer-0.2.0 vs README.md in sniffer-0.3.0

@@ -41,34 +41,10 @@
 
 Or install it yourself as:
 
     $ gem install sniffer
 
-## Configuration
-
-Sniffer default options:
-
-```ruby
-Sniffer.config do |c|
-  c.logger = Logger.new($stdout),
-  c.severity = Logger::Severity::DEBUG,
-  # HTTP options to log
-  c.log = {
-    request_url: true,
-    request_headers: true,
-    request_body: true,
-    request_method: true,
-    response_status: true,
-    response_headers: true,
-    response_body: true,
-    timing: true
-  },
-  c.store =  true, # save requests/responses to Sniffer.data
-  c.enabled = false  # Sniffer disabled by default
-end
-```
-
 ## Usage
 
 Here's some simple examples to get you started:
 
 ```ruby
@@ -141,11 +117,68 @@
 ```
 D, [2017-10-26T16:47:14.007152 #59511] DEBUG -- : {"port":80,"host":"example.com","query":"/?lang=ruby&author=matz","rq_connection":"close","method":"get","request_body":"","status":200,"rs_accept_ranges":"bytes","rs_cache_control":"max-age=604800","rs_content_type":"text/html","rs_date":"Thu, 26 Oct 2017 13:47:13 GMT","rs_etag":"\"359670651+gzip\"","rs_expires":"Thu, 02 Nov 2017 13:47:13 GMT","rs_last_modified":"Fri, 09 Aug 2013 23:54:35 GMT","rs_server":"ECS (lga/1385)","rs_vary":"Accept-Encoding","rs_x_cache":"HIT","rs_content_length":"1270","rs_connection":"close","timing":0.513012999901548,"response_body":"OK"}
 ```
 where `rq_xxx` is request header and `rs_xxx` - response header
 
+## Configuration
 
+Sniffer default options:
+
+```ruby
+Sniffer.config do |c|
+  c.logger = Logger.new($stdout),
+  c.severity = Logger::Severity::DEBUG,
+  # HTTP options to log
+  c.log = {
+    request_url: true,
+    request_headers: true,
+    request_body: true,
+    request_method: true,
+    response_status: true,
+    response_headers: true,
+    response_body: true,
+    timing: true
+  },
+  c.store =  true, # save requests/responses to Sniffer.data
+  c.enabled = false  # Sniffer disabled by default
+  c.url_whitelist = nil
+  c.url_blacklist = nil
+end
+```
+
+### Whitelist
+
+You can add specific host url to whitelist as regexp or string. Sniffer will store only requests that matched.
+
+```ruby
+Sniffer.config.url_whitelist = /whitelisted.com/
+
+HTTP.get('http://example.com')
+Sniffer.data[0].to_h
+# => {}
+
+HTTP.get('http://whitelisted.com/')
+Sniffer.data[0].to_h
+# => {{:request=>{:host=>"whitelisted.com", ....}}
+```
+
+### Blacklist
+
+You can add specific host url to blacklist as regexp or string. Sniffer will ignore all matched requests.
+
+```ruby
+Sniffer.config.url_blacklist = /blacklisted.com/
+
+HTTP.get('http://blacklisted.com')
+Sniffer.data[0].to_h
+# => {}
+
+HTTP.get('http://example.com')
+Sniffer.data[0].to_h
+# => {{:request=>{:host=>"example.com", ...}}
+```
+
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
 
 To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).
@@ -158,9 +191,10 @@
 
 * [Sergey Ponomarev](https://github.com/sponomarev)
 * [Salahutdinov Dmitry](https://github.com/dsalahutdinov)
 * [Stanislav Chereshkevich](https://github.com/dissident)
 * [Anatoliy Kurichev](https://github.com/russo-matrosso)
+* [Dmitriy Ivliev](https://github.com/moofkit)
 
 ## License
 
 The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).