Polish README

Author: PythonCoderAS

README.md

@@ -2,6 +2,8 @@
 
 Generates an Abstract Syntax Tree (AST) from a chunk of BBCode.
 
+Read full and updated documentation: https://pythoncoderas.github.io/bbcode-ast/
+
 ## Installation
 
 ```bash
@@ -11,7 +13,7 @@ npm install --save bbcode-ast
 ## Usage
 
 You can either use the default parser or construct your own parser. Once you have a `Parser`, call the `parse` method on
-it.
+it. The default parser can be imported.
 
 It will return the root node of the AST.