Update Contributing file

Author: igorissen

CONTRIBUTING.md

@@ -1 +1,64 @@
-# Contributing
+# Contributing Guide
+
+
+## Dependencies
+
+To make sure that the following instructions work, please install the following dependencies on your machine:
+
+* Node.js (used v0.12.7, not tested on v4+)
+* npm
+* bower
+* gulp (globally)
+* Git
+
+## Installation
+
+Get the source by clonning the git repository:
+
+```
+$ git clone https://github.com/igorissen/angular-link-header-parser.git
+```
+
+Navigate to the project folder and install needed dependencies:
+
+```
+$ npm install
+$ bower install
+```
+
+## Building
+
+This module comes with a few gulp tasks wich help you automate the development process. The following tasks are provided:
+
+###### gulp help
+
+Will show you the list of available tasks.
+
+###### gulp clean
+
+Will delete `release` folder where the module and his minified version are copied.
+
+###### gulp build-min
+
+Will updates the minified version of the module (`angular-link-header-parser.min.js`).
+
+###### gulp copy-module
+
+Will updates the module (`angular-link-header-parser.js`).
+
+###### gulp build
+
+Simple task wich trigger `build-min` and `copy-module` tasks.
+
+## Submitting fixes and/or improvements
+
+I'm using the `git-flow` process so I have only 2 branches `master` and `develop`. `develop` is used to the development process.
+
+* Checkout a new branch based on `develop` and name it to what you intend to do
+	* Example: `$ git checkout -b BRANCH_NAME`
+* Make your changes
+* Commit your changes
+	* Please provide a git message which explains what you've done
+* Merge your changes to `develop`
+* Make a pull request
+