Added badges to readme

Author: mariusc

Diff for: .gitignore

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 #
 # gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
 
+.DS_Store
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 ## Build generated
 build/
 DerivedData

Diff for: README.md

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 # Noted
 
+[![Travis](https://travis-ci.org/nodes-ios/Noted.svg?branch=master)](https://travis-ci.org/nodes-ios/Noted)
+[![Codecov](https://img.shields.io/codecov/c/github/nodes-ios/Noted.svg)](https://codecov.io/github/nodes-ios/Noted)
+[![Carthage Compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
+![Plaform](https://img.shields.io/badge/platform-iOS-lightgrey.svg)
+[![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/nodes-ios/Noted/blob/master/LICENSE)
+
 A minimalistic and effective replacement for `NSNotificationCenter`, that promotes the observer pattern and keeps weak references to it's observers.
 
 **Features:**