Update README.md

Author: tomverran

README.md

@@ -6,13 +6,37 @@ Robots.txt checker
 [![Test Coverage](https://codeclimate.com/github/tomverran/robots/badges/coverage.svg)](https://codeclimate.com/github/tomverran/robots/coverage)
 [![Code Climate](https://codeclimate.com/github/tomverran/robots/badges/gpa.svg)](https://codeclimate.com/github/tomverran/robots)
 
+
 Given a robots.txt file this library will give you a straight forward yes/no as to whether you're allowed to access
 a given resource with a given user agent.
 
-Wildcards are supported.
+This library has been built with reference to both [Google's robots.txt specification](https://developers.google.com/webmasters/control-crawl-index/docs/robots_txt) and the draft [norobots RFC](http://www.robotstxt.org/norobots-rfc.txt) from 1996(!). As such all the following features are supported:
+
+ - Wildcards in paths, including across directory boundaries
+ - The '$' suffix to anchor a path match to the end of a URL
+ - Sorting of multiple matching user-agent/path blocks by user-agent length
+ - Decoding of URL encoded paths, with the exception of forward slashes
+ - A trailing slash on a path indicating that all files under that directory should match
 
 If you find any bugs with this library please don't hesitate to let me know, either create an issue on GitHub or submit a pull request.
 
+Installation
+------------
+
+Either type the following into your terminal:
+
+```bash
+composer require tomverran/robots-txt-checker
+```
+
+or add the following to your composer.json:
+
+```json
+"require": {
+    "tomverran/robots-txt-checker": "^1.12"
+}
+```
+
 Example Usage
 -------------
 
@@ -28,7 +52,7 @@ License
 
 tl;dr MIT license
 
-Copyright (c) 2014 Tom Verran
+Copyright (c) 2014, 2016 Tom Verran
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -47,4 +71,3 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
-