Add browser support, contributions and license sections.

Author: Eric Wendelin

README.md

@@ -2,16 +2,44 @@ error-stack-parser.js - Extract meaning from JS Errors
 ===============
 [![Build Status](https://travis-ci.org/stacktracejs/error-stack-parser.svg?branch=master)](https://travis-ci.org/stacktracejs/error-stack-parser) [![Coverage Status](https://img.shields.io/coveralls/stacktracejs/error-stack-parser.svg)](https://coveralls.io/r/stacktracejs/error-stack-parser) [![Code Climate](https://codeclimate.com/github/stacktracejs/error-stack-parser/badges/gpa.svg)](https://codeclimate.com/github/stacktracejs/error-stack-parser)
 
+Simple, cross-browser [Error](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error) parser.
+This library parses and extracts function names, URLs, line numbers, and column numbers from the given Error's `stack` as
+an Array of [StackFrame](http://git.io/stackframe)s. 
+
+Once you have parsed out StackFrames, you can do much more interesting things. See [stacktrace-gps](http://git.io/stacktrace-gps).
+
+Note that in IE9 and earlier, `Error` objects don't have enough information to extract much of anything. In IE 10, `Error`s
+are given a `stack` once they're `throw`n. 
+
 ## Usage
-```
-ErrorStackParser.parse(new Error("sample"));
+```js
+ErrorStackParser.parse(new Error('boom'));
 
-=> [StackFrame('funName1', [], 'path/to/file.js', 35, 79), StackFrame(..)]
+=> [
+        StackFrame('funky1', [], 'path/to/file.js', 35, 79), 
+        StackFrame('filter', undefined, 'https://cdn.somewherefast.com/utils.min.js', 1, 832),
+        StackFrame(... and so on ...)
+   ]
 ```
 
 ## Installation
-```
+```bash
 npm install error-stack-parser
 bower install error-stack-parser
 https://raw.githubusercontent.com/stacktracejs/error-stack-parser/master/dist/error-stack-parser.min.js
 ```
+
+## Browser Support
+* Chrome 1+
+* Firefox 3.6+
+* Safari 7+
+* Opera 9+
+* IE 10+
+* iOS 7+
+* Android 4.2+
+
+## Contributing
+Want to be listed as a *Contributor*? Start with the [Contributing Guide](CONTRIBUTING.md)!
+
+## License
+This project is licensed to the [Public Domain](http://unlicense.org)