Brief description on requests matching functionality and contribution guide.

Author: bsalex

README.md

@@ -1,6 +1,19 @@
 # Angular loading overlay http interceptor
 
-The module allows you to show overlay on every ajax request with [angular-loading-overlay](http://bsalex.github.io/angular-loading-overlay/_site/)  
+The module allows you to show loading overlay on every ajax request with [angular-loading-overlay](http://bsalex.github.io/angular-loading-overlay/_site/).  
+It also includes requests matcher, which allows to act only on certain requests.
 
 Copyright (c) 2016 Oleksandr Beshchuk <[[email protected]](mailto:[email protected])>  
 Licensed under the [Apache License](http://www.apache.org/licenses/LICENSE-2.0).
+
+
+## Contributing
+
+1. Fork the repo
+1. `npm install`
+1. `npm run prepare-development`
+1. `npm run test:watch`
+1. Make your changes, add your tests
+1. `npm run build`
+1. Stage source and dist folders
+1. Commit, push, PR.