Add Contributing file

CONTRIBUTING.md

@@ -0,0 +1,116 @@
+Contributing to Sprockets
+=====================
+
+Sprockets is work of [hundreds of contributors](https://github.com/rails/sprockets/graphs/contributors). You're encouraged to submit [pull requests](https://github.com/rails/sprockets/pulls), [propose features and discuss issues](https://github.com/rails/sprockets/issues).
+
+#### Fork the Project
+
+Fork the [project on Github](https://github.com/rails/sprockets) and check out your copy.
+
+```
+git clone https://github.com/contributor/sprockets.git
+cd sprockets
+git remote add upstream https://github.com/rails/sprockets.git
+```
+
+#### Create a Topic Branch
+
+Make sure your fork is up-to-date and create a topic branch for your feature or bug fix.
+
+```
+git checkout master
+git pull upstream master
+git checkout -b my-feature-branch
+```
+
+#### Bundle Install and Test
+
+Ensure that you can build the project and run tests.
+
+```
+bundle install
+bundle exec rake test
+```
+
+#### Write Tests
+
+Try to write a test that reproduces the problem you're trying to fix or describes a feature that you want to build. Add to [test](test).
+
+We definitely appreciate pull requests that highlight or reproduce a problem, even without a fix.
+
+#### Write Code
+
+Implement your feature or bug fix.
+
+Make sure that `bundle exec rake test` completes without errors.
+
+#### Write Documentation
+
+Document any external behavior in the [README](README.md).
+
+#### Update Changelog
+
+Add a line to [CHANGELOG](CHANGELOG.md) under *Next Release*. Make it look like every other line, including your name and link to your Github account.
+
+#### Commit Changes
+
+Make sure git knows your name and email address:
+
+```
+git config --global user.name "Your Name"
+git config --global user.email "[email protected]"
+```
+
+Writing good commit logs is important. A commit log should describe what changed and why.
+
+```
+git add ...
+git commit
+```
+
+#### Push
+
+```
+git push origin my-feature-branch
+```
+
+#### Make a Pull Request
+
+Go to https://github.com/contributor/sprockets and select your feature branch. Click the 'Pull Request' button and fill out the form. Pull requests are usually reviewed within a few days.
+
+#### Rebase
+
+If you've been working on a change for a while, rebase with upstream/master.
+
+```
+git fetch upstream
+git rebase upstream/master
+git push origin my-feature-branch -f
+```
+
+#### Update CHANGELOG Again
+
+Update the [CHANGELOG](CHANGELOG.md) with a short description of your change. A typical entry looks as follows.
+
+```
+* Fix static asset mtime fallback.
+```
+
+Amend your previous commit and force push the changes.
+
+```
+git commit --amend
+git push origin my-feature-branch -f
+```
+
+#### Check on Your Pull Request
+
+Go back to your pull request after a few minutes and see whether it passed muster with Travis-CI. Everything should look green, otherwise fix issues and amend your commit as described above.
+
+#### Be Patient
+
+It's likely that your change will not be merged and that the nitpicky maintainers will ask you to do more, or fix seemingly benign problems. Hang on there!
+
+#### Thank You
+
+Please do know that we really appreciate and value your time and work. We love you, really.

README.md

@@ -1,5 +1,7 @@
 # Sprockets: Rack-based asset packaging
 
+[![Build Status](https://travis-ci.org/rails/sprockets.svg?branch=master)](https://travis-ci.org/rails/sprockets)
+
 Sprockets is a Ruby library for compiling and serving web assets.
 It features declarative dependency management for JavaScript and CSS
 assets, as well as a powerful preprocessor pipeline that allows you to
@@ -20,7 +22,6 @@ Or include it in your project's `Gemfile` with Bundler:
 gem 'sprockets', '~> 3.0'
 ```
 
-
 ## Understanding the Sprockets Environment
 
 You'll need an instance of the `Sprockets::Environment` class to
@@ -433,36 +434,16 @@ def self.call(input)
 end
 ```
 
+## Contributing to Sprockets
 
-## Development
-
-### Contributing
-
-The Sprockets source code is [hosted on
-GitHub](https://github.com/rails/sprockets). You can check out a
-copy of the latest code using Git:
-
-    $ git clone https://github.com/rails/sprockets
+Sprockets is the work of hundreds of contributors. You're encouraged to submit pull requests, propose
+features and discuss issues.
 
-If you've found a bug or have a question, please open an issue on the
-[Sprockets issue
-tracker](https://github.com/rails/sprockets/issues). Or, clone
-the Sprockets repository, write a failing test case, fix the bug and
-submit a pull request.
+See [CONTRIBUTING](CONTRIBUTING.md).
 
 ### Version History
 
 Please see the [CHANGELOG](https://github.com/rails/sprockets/tree/master/CHANGELOG.md)
 
-## Build Status
-
-[![Build Status](https://travis-ci.org/rails/sprockets.svg?branch=master)](https://travis-ci.org/rails/sprockets)
-
 ## License
-
-Copyright &copy; 2014 Sam Stephenson <<[email protected]>>
-
-Copyright &copy; 2014 Joshua Peek <<[email protected]>>
-
-Sprockets is distributed under an MIT-style license. See LICENSE for
-details.
+Sprockets is released under the [MIT License](MIT-LICENSE).