Update README to reflect available options

Author: Colin Roache

README.md

@@ -9,11 +9,11 @@
 Installation via `npm`.  If you don't have `npm` yet:
 
      curl https://npmjs.org/install.sh | sh
-     
+
 Once you have `npm`:
 
      npm install http-server -g
-     
+
 This will install `http-server` globally so that it may be run from the command line.
 
 ## Usage:
@@ -46,22 +46,22 @@ This will install `http-server` globally so that it may be run from the command
 
 ## Available Options:
 
-`-p` Port to listen for connections on (defaults to 8080)
+`-p` Port to use (defaults to 8080)
 
-`-a` Address to bind to (defaults to '0.0.0.0')
+`-a` Address to use (defaults to 0.0.0.0)
 
 `-d` Show directory listings (defaults to 'True')
 
 `-i` Display autoIndex (defaults to 'True')
 
-`-e` or `--ext` Default file extension (defaults to 'html')
+`-e` or `--ext` Default file extension if none supplied (defaults to 'html')
 
-`-s` or `--silent` In silent mode, log messages aren't logged to the console.
+`-s` or `--silent` Suppress log messages from output
 
-`--cors` Enable CORS via the 'Access-Control-Allow-Origin' header".
+`--cors` Enable CORS via the `Access-Control-Allow-Origin` header
 
-`-o` or Open browser window after staring the server".
+`-o` Open browser window after staring the server
 
-`-h` or `--help` Displays a list of commands and exits.
+`-h` or `--help` Print this list and exit.
 
 `-c` Set cache time (in seconds) for cache-control max-age header, e.g. -c10 for 10 seconds. To disable caching, use -c-1.