Clarify license and readme

LICENSE

@@ -0,0 +1,27 @@
+Original "Negotiator" program Copyright Federico Romero
+Port to JavaScript Copyright Isaac Z. Schlueter
+
+All rights reserved.
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE 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.

readme.md

@@ -2,6 +2,8 @@
 
 An HTTP content negotiator for node.js written in javascript.
 
+This is a port to JavaScript of <https://github.com/federomero/negotiator>.
+
 # Accept Negotiation
 
     Negotiator = require('negotiator')
@@ -30,7 +32,7 @@ You can check a working example at `examples/accept.js`.
 
 Returns an array of preferred media types ordered by priority from a list of available media types.
 
-`preferredMediaTyp(availableMediaType)`:
+`preferredMediaType(availableMediaType)`:
 
 Returns the top preferred media type from a list of available media types.
 
@@ -67,7 +69,7 @@ Returns the top preferred language from a list of available languages.
 
 # Accept-Charset Negotiation
 
-    Negotiator = require('negotiator').Negotiator
+    Negotiator = require('negotiator')
 
     availableCharsets = ['utf-8', 'iso-8859-1', 'iso-8859-5']