Update README.md

Author: igorkulman

README.md

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-# iOSLocalizationEditor
+# Localization Editor
 Simple macOS editor app to help you manage iOS app localizations by allowing you to edit all the translations side by side
+
+![Localization Editor](https://github.com/igorkulman/iOSLocalizationEditor/raw/master/editor.png)
+
+## Motivation
+
+Managing localization files (`Localizable.strings`) is a pain, there is no tooling for it. There is no easy way to know what strings are missing or to compare them across languages. 
+
+## What does this tool do?
+
+Start the Localization Editor, choose File | Open folder with localization files and point it to the folder where your localization files are stored. The tool find all the `Localizable.strings`, detects their language and displays your strings side by side as shown on the screenshot above. 
+
+All the translations are sorted by their key (shown as first column) and you cansee and compare them quickly, you can also see missing translations in any language. 
+
+When you change any of the translation the corresponding `Localizable.strings` gets updated.
+
+## Requirements
+
+- Xcode 9+
+- Carthage
+
+## Getting started
+
+Run `carthage bootstrap` to download and build all the Carthage dependencies before opening the Xcode project for the first time.