docs: Update

Author: angeltsvetkov

CONTRIBUTING.md

@@ -10,17 +10,15 @@ Third-party patches are essential for keeping nativescript-facebook plugin great
         git clone git@github.com:<your-username>/nativescript-facebook.git
 
 * Make commits of logical units.
-* Make sure your commit messages are in the proper format.
+* Make sure your commit messages are in the proper format. We are strongly recommend to use [semantic commit messages](https://seesparkbox.com/foundry/semantic_commit_messages)
 * Add tests for your changes and make them pass. How to run tests you can find in [Testing section](#Testing)
 * Push your changes to a topic branch in your fork of the repository.
 * Submit a pull request to the **nativescript-facebook** repository.
 
-## <a name='Testing'> Testing </a>
+## Testing
 
 There are three main points in order to get nativescript-facebook e2e UI tests running locally on iOS 10 Simulator and Android api 23 Emulator. Before that if you want to take a look at the tests and make some changes find them located in `demo/e2e-tests` folder.
 
-Note, that all commands below assume you have installed npm packages in /src and /demo folders (`$ npm i`) and you are using OS X in order to use both iOS Simulator and Android emulator.
-
 * Install Appium. Test execution depends on [nativescript-dev-appium](https://github.com/NativeScript/nativescript-dev-appium) plugin which is added as dev dependency in `demo` app folder and first command satisfies its requirement to have appium installed.
 
         $ npm install -g appium@1.6.3

README.md

@@ -35,6 +35,8 @@ NativeScript : Facebook SDK ![apple](https://cdn3.iconfinder.com/data/icons/pico
 - [Login Response](#login-response)
 - [Graph API Example](#graph-api-example)
 - [Release notes](#release-notes)
+- [FAQ](#faq)
+- [Contributing](#contributing)
 - [License](#license)
 
 <!-- /TOC -->
@@ -468,5 +470,8 @@ This sample is part of the demo apps and can be observed [here](https://github.c
 ## FAQ
 Check out our FAQ section [here](https://github.com/NativeScript/nativescript-facebook/wiki/FAQ).
 
+## Contributing
+Check out our Contribution guide [here](https://github.com/NativeScript/nativescript-facebook/blob/master/CONTRIBUTING.md).
+
 ## License
 [Apache 2.0](https://github.com/NativeScript/nativescript-facebook/blob/master/LICENSE)