Update README.

Author: jaredhanson

README.md

@@ -37,7 +37,7 @@ The OAuth 2.0 authentication strategy authenticates users using a third-party
 account and OAuth 2.0 tokens.  The provider's OAuth 2.0 endpoints, as well as
 the client identifer and secret, are specified as options.  The strategy
 requires a `verify` callback, which receives an access token and profile,
-and calls `done` providing a user.
+and calls `cb` providing a user.
 
 ```js
 passport.use(new OAuth2Strategy({
@@ -47,9 +47,9 @@ passport.use(new OAuth2Strategy({
     clientSecret: EXAMPLE_CLIENT_SECRET,
     callbackURL: "http://localhost:3000/auth/example/callback"
   },
-  function(accessToken, refreshToken, profile, done) {
+  function(accessToken, refreshToken, profile, cb) {
     User.findOrCreate({ exampleId: profile.id }, function (err, user) {
-      return done(err, user);
+      return cb(err, user);
     });
   }
 ));
@@ -81,19 +81,44 @@ app.get('/auth/example/callback',
 - [passport-http-bearer](https://github.com/jaredhanson/passport-http-bearer) — Bearer token authentication strategy for APIs
 - [OAuth2orize](https://github.com/jaredhanson/oauth2orize) — OAuth 2.0 authorization server toolkit
 
-## Tests
+## Contributing
 
+#### Tests
+
+The test suite is located in the `test/` directory.  All new features are
+expected to have corresponding test cases.  Ensure that the complete test suite
+passes by executing:
+
+```bash
+$ make test
 ```
-$ npm install
-$ npm test
+
+#### Coverage
+
+All new feature development is expected to have test coverage.  Patches that
+increse test coverage are happily accepted.  Coverage reports can be viewed by
+executing:
+
+```bash
+$ make test-cov
+$ make view-cov
 ```
 
-## Credits
+## Support
+
+#### Funding
+
+This software is provided to you as open source, free of charge.  The time and
+effort to develop and maintain this project is dedicated by [@jaredhanson](https://github.com/jaredhanson).
+If you (or your employer) benefit from this project, please consider a financial
+contribution.  Your contribution helps continue the efforts that produce this
+and other open source software.
 
-  - [Jared Hanson](http://github.com/jaredhanson)
+Funds are accepted via [PayPal](https://paypal.me/jaredhanson), [Venmo](https://venmo.com/jaredhanson),
+and [other](http://jaredhanson.net/pay) methods.  Any amount is appreciated.
 
 ## License
 
 [The MIT License](http://opensource.org/licenses/MIT)
 
-Copyright (c) 2011-2015 Jared Hanson <[http://jaredhanson.net/](http://jaredhanson.net/)>
+Copyright (c) 2011-2016 Jared Hanson <[http://jaredhanson.net/](http://jaredhanson.net/)>