Added sections on how to contribute

Signed-off-by: Thomas Endres <Thomas-Endres@gmx.de>

CONTRIBUTING.md

@@ -2,6 +2,17 @@
 
 Contributions are very welcome. The following will provide some helpful guidelines.
 
+## How to contribute
+
+We love pull requests. Here is a quick guide:
+
+2. Fork the repo.
+3. Create a new branch from master.
+5. Add your change together with necessary tests.
+6. Run `mvn clean build` and ensure all tests are passing.
+7. Commit and push to your fork/branch and submit a pull request. Don't forget to sign-off your commit (see next section).
+8. Create a pull request.
+
 ##  Sign your work - the Developer's Certificate of Origin
 The sign-off is a simple line at the end of the explanation for the patch, which certifies that you wrote it or otherwise have the right to pass it on as an open-source patch. The rules are pretty simple: if you can certify the below (from developercertificate.org):
 

README.md

@@ -1,8 +1,6 @@
 Java Config-Builder
  [![Build Status](https://travis-ci.org/TNG/config-builder.svg?branch=master)](https://travis-ci.org/TNG/config-builder)
  [![Coverage Status](https://coveralls.io/repos/TNG/config-builder/badge.svg?branch=master&service=github)](https://coveralls.io/github/TNG/config-builder?branch=master)
- [![Dependency Status](https://www.versioneye.com/user/projects/56989a13af789b002e000b72/badge.svg?style=flat)](https://www.versioneye.com/user/projects/56989a13af789b002e000b72)
- [![MavenCentral](https://img.shields.io/maven-central/v/com.tngtech.java/config-builder.svg)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22com.tngtech.java%22%20AND%20a%3A%22config-builder%22)
  [![Stories in Ready](https://badge.waffle.io/TNG/config-builder.png?label=ready&title=Ready)](http://waffle.io/TNG/config-builder)
 ===================
 
@@ -210,3 +208,7 @@ A sample presentation can be found at http://tng.github.io/config-builder
 Java Doc
 --------
 Full javadoc of the code can be found here http://tng.github.io/config-builder/javadoc
+
+How to contribute
+-----------------
+Please have a look at [CONTRIBUTING.md](CONTRIBUTING.md)