Add readme

Author: bhavik66

readme.md

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+<p align="center">
+  <img src="https://i.imgur.com/CbpT7sy.jpg" alt="FirebaseChat" title="FirebaseChat" />
+</p>
+
+# React Native Firebase Chat
+
+[![React Native][react_native-badge]][react_native-url]
+[![Android Platform][android_platform-badge]][android_platform-url]
+[![Android Studio][android_studio-badge]][android_studio-url]
+
+React Native chat application using Firebase backend. 
+
+In this project We have used following Firebase serivces.
+* **Firebase Authentication** : For authentication user by phone number
+* **Firebase RealTime Database** : That's we for handle realtime chat
+* **Firebase Storage** : That's we use for store user profile image
+
+BinBytes is an mobile & web application development agency in Rajkot, India. You'll find an overview of all our services [on our website](https://binbytes.com).
+
+## Requirements
+
+### Mandatory
+- [Android Studio](https://developer.android.com/studio/index.html).
+- [Node](https://nodejs.org), [Watchman](https://facebook.github.io/watchman/) and [React Native](https://facebook.github.io/react-native/).
+
+### Optional
+- [VS Code](https://code.visualstudio.com/)
+- [Prettier](https://marketplace.visualstudio.com/items?itemName=esbenp.prettier-vscode)
+
+## Enviroment Settings
+
+### Mandatory
+- Install [Android Studio](https://developer.android.com/studio/index.html) and create an emulator.
+- Install [Homebrew](https://brew.sh/).
+- Install [Node](https://nodejs.org), [Watchman](https://facebook.github.io/watchman/) and [React Native](https://facebook.github.io/react-native/).
+
+```
+brew update
+brew install node
+brew install watchman
+npm install -g react-native-cli
+```
+
+### Optional
+- Install [VS Code](https://code.visualstudio.com/) and follow extensions: `prettier`
+
+## Firebase Steup
+- For Firebase setup you need follow this [instructions](https://firebase.google.com/docs/android/setup)
+
+## Steps to Run
+### 1. Clone project and install the dependencies
+```
+git clone [email protected]:binbytes/react-native-firebase-chat.git && cd react-native-firebase-chat && npm install
+```
+
+### 2. Setup firebase in Android
+- Download `google-services.json` from Firebase Project and copy it to `react-native-firebase-chat/android/app`
+
+(For download `google-services.json` use [this](https://support.google.com/firebase/answer/7015592))
+
+### 3. Make sure you have started an emulator and run the app on Android
+```
+react-native run-android
+```
+
+## Architecture
+
+<p align="center">
+  <img src="https://i.imgur.com/RUJUqGE.jpg" />
+</p>
+
+## Security
+
+If you discover any security related issues, please email author email instead of using the issue tracker.
+
+## Credits
+
+- [Bhavik Charola](https://github.com/bhavik66)
+
+## License
+
+MIT License. Please see the [license file](LICENSE.md) for more information.
+
+
+[react_native-badge]: https://img.shields.io/badge/React%20Native-0.57.7-blue.svg?style=flat
+[react_native-url]: https://facebook.github.io/react-native/
+[android_platform-badge]: https://img.shields.io/badge/Android-4.1+-green.svg
+[android_platform-url]: https://developer.android.com/index.html
+[android_studio-badge]: https://img.shields.io/badge/Android%20Studio-3.2.1+-green.svg
+[android_studio-url]: https://developer.android.com/studio/install