Github user smarthi commented on a diff in the pull request:
https://github.com/apache/incubator-samoa/pull/6#discussion_r24119311
--- Diff: CONTRIBUTING.md ---
@@ -1,18 +1,73 @@
How to contribute?
=================
-User contribution is essential to keep moving the project forward.
+The best way to submit a contribution to Apache SAMOA is through a GitHub
pull request.
-# Getting Started
+Here is a guide to contribute to Apache SAMOA.
-1. [Fork the repository](https://help.github.com/articles/fork-a-repo) on
GitHub
+## Where is the source code?
-2. Sign the [Contributor License Agreement]
(http://www.clahub.com/agreements/gdfm/samoa)
+SAMOA source code is maintained through **git**. The Apache SAMOA [git
repository](git://git.apache.org/incubator-samoa.git) is the source of truth.
Only SAMOA committers can push updates to this repo.
-3. Create a feature branch ```git checkout -b branch_name```
+The Apache git repo is [mirrored to
github](https://github.com/apache/incubator-samoa) for convenience. This mirror
is read-only.
-4. Make your changes (please make commits that are logical units)
+For writing contributions we suggest you start by
[forking](https://help.github.com/articles/fork-a-repo) the [GitHub Apache
SAMOA](https://github.com/apache/incubator-samoa) repository.
-5. Build and run tests
+## How do I build the software?
-6. Submit a [pull
request](https://help.github.com/articles/using-pull-requests)
+We use [**maven**](http://maven.apache.org/): `mvn clean install`
+
+Note that this only builds the core artifacts of SAMOA (instances, API,
local engine and test framework).
+
+To build everything, including the integrations with various stream
processing platforms use the "all" profile: `mvn clean install -Pall`
+
+You may also specify platform profiles individually: `-Pstorm`, `-Ps4`,
`-Psamza`, `-Pthreads`.
+
+
+
+## What rules should I follow in a code contribution?
+
+
+### Coding convention
+
+* All public classes and methods should have informative Javadoc comments.
+* Do not use @author tags.
+* Code should be formatted according to Sun's conventions, with the
following exceptions:
+ * **Use spaces for indentation, not tabs**
+ * **Indent two (2) spaces per level, not four (4).**
+ * **Line length limit is 120 chars, instead of 80 chars.**
+* SAMOA includes an eclipse-format.xml formatting template that eclipse or
intellij idea users might find convenient.
+
+### Tests
+
+* Contributions should pass existing unit tests (`mvn test`).
+* New unit tests should be provided to demonstrate bugs and fixes. JUnit
4.1 is our test framework
+
--- End diff --
We could just say the latest version of Junit is our test framework instead
of calling out a specific version
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