Update Readme file

Author: igorissen

README.md

@@ -4,14 +4,87 @@ AngularJS factory that parse Link header and return a JSON object.
 
 ## TODO
 
+* unit testing
+* more code documentations
+* add examples
+
 ## License
 
-Released under the terms of the [MIT License]().
+Released under the terms of the [MIT License](https://github.com/igorissen/angular-link-header-parser/blob/master/LICENSE.md).
 
 ## Contributing
 
+If you want to contribute, please read this small [guide](https://github.com/igorissen/angular-link-header-parser/blob/master/CONTRIBUTING.md).
+
 ## Changelog
 
+You ask yourself what has changed? Please read the [changelog](https://github.com/igorissen/angular-link-header-parser/blob/master/CHANGELOG.md).
+
 ## Installation
 
-## Usage
+```
+bower install [--save] angular-link-header-parser
+```
+
+## Usage
+
+Include `angular-link-header-parser.js` or minified version `angular-link-header-parser.min.js`.
+
+```html
+<script src="path/to/vendors/angular-link-header-parser/release/angular-link-header-parser.js"></script>
+<!-- OR -->
+<script src="path/to/vendors/angular-link-header-parser/release/angular-link-header-parser.min.js"></script>
+```
+
+Add the module `ig.linkHeaderParser` as a dependency to your app module.
+
+```js
+angular.module("app", [ "ig.linkHeaderParser" ]);
+```
+
+Then when needed inject `linkHeaderParser` as a dependency.
+
+```js
+angular
+  .module("app")
+  .controller("Controller", Controller);
+
+Controller.$inject = [ "linkHeaderParser" ];
+
+function Controller(linkHeaderParser) {
+  var vm = this;
+  
+  var linkHeaderText = '<http://localhost:28786/dev/certifications?page=1&limit=100>; rel="first", <http://localhost:28786/dev/certifications?page=1&limit=100>; rel="last", <http://localhost:28786/dev/certifications?page=1&limit=100>; rel="next", <http://localhost:28786/dev/certifications?page=1&limit=100>; rel="prev"';
+  
+  var json = linkHeaderParser.parse(linkHeaderText);
+  
+  console.log(json);
+}
+```
+
+You will receive a JSON object like this :
+
+```json
+{
+  "first": {
+    "limit": 100,
+    "page": 1,
+    "url": "http://localhost:28786/dev/certifications?page=1&limit=100"
+  },
+  "last": {
+    "limit": 100,
+    "page": 1,
+    "url": "http://localhost:28786/dev/certifications?page=1&limit=100"
+  },
+  "next": {
+    "limit": 100,
+    "page": 1,
+    "url": "http://localhost:28786/dev/certifications?page=1&limit=100"
+  },
+  "prev": {
+    "limit": 100,
+    "page": 1,
+    "url": "http://localhost:28786/dev/certifications?page=1&limit=100"
+  },
+}
+```