chore: update readme file, add breaking changes file

Author: LProulx86

BREAKING_CHANGES.md

@@ -1,6 +1,10 @@
 # Cartography
 
-Nventive solution for mobile app map.
+### **Description**
+Cartography adds map functionalities to your Uno app.
+
+### **Goal**
+Provides solutions for fully interactive map, simple static map or native map services.
 
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](LICENSE)
 
@@ -11,7 +15,7 @@ Nventive solution for mobile app map.
 - For seeing samples, build and install app with VS on the desire device (Android, IOS, or UWP)
 
  
-## **DynamicMap**
+### **DynamicMap**
 - Add Cartography.DynamicMap NuGet package to your project.
 - In your ViewModel :
 ```csharp
@@ -39,7 +43,7 @@ using Cartography.DynamicMap
 - Control can be added to your map : See [DynamicMapControl](Documentation/DynamicMapControl.md)
 
  
-## **StaticMap**
+### **StaticMap**
 - Add Cartography.StaticMap NuGet package to your project.
 - In your ViewModel :
 ```csharp
@@ -57,7 +61,7 @@ using Cartography.StaticMap
 - Add Style StaticMapControl : see https://github.com/nventive/Cartography/blob/master/Samples/Samples/Samples.Shared/Views/Styles/StaticMapControl.xaml
 
  
-## **MapService**
+### **MapService**
 - Add Cartography.MapService NuGet package to your project.
 - In your ViewModel :
 ```csharp
@@ -137,17 +141,20 @@ OR
 2.	`Direction` : Open user default map service and show direction from User location to somewhere.
 
 
-## Changelog
+## Repository
+
+### Changelog
 
 Please consult the [CHANGELOG](CHANGELOG.md) for more information about version
 history.
 
-## License
+Please consult the [BREAKING CHANGES](BREAKING_CHANGES.md) for the list of breaking changes.
+
+### License
 
-This project is licensed under the Apache 2.0 license - see the
-[LICENSE](LICENSE) file for details.
+This project is licensed under the [Apache 2.0 license](LICENSE).
 
-## Contributing
+### Contributing
 
 Please read [CONTRIBUTING.md](CONTRIBUTING.md) for details on the process for
 contributing to this project.