Create README.md

README.md

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+# Rocket.Chat React Native Mobile
+
+**Supported Server Versions:** 0.58.0+ (We are working to support earlier versions)
+
+# Installing Dependencies
+
+Follow the [React Native Getting Started Guide](https://facebook.github.io/react-native/docs/getting-started.html) for detailed instructions on setting up your local machine for development.
+
+# Detailed configuration:
+
+## Mac
+
+- General requirements
+
+    - XCode 8.3
+    - Install required packages using homebrew:
+      ```bash
+      $ brew install watchman
+      $ brew install yarn
+      ```
+	  
+- Clone repository and configure:
+    ```bash
+    $ git clone git@github.com:RocketChat/Rocket.Chat.ReactNative.git
+    $ cd Rocket.Chat.ReactNative
+    $ npm install
+    $ npm install -g react-native-cli
+    ```
+
+- Run application
+    ```bash
+    $ react-native run-ios
+    ```
+    ```bash
+    $ react-native run-android
+    ```
+
+## Linux:
+
+- General requiriments:
+
+  - JDK 7 or greater
+  - Android SDK
+  - Virtualbox
+  - An Android emulator: Genymotion or Android emulator. If using genymotion ensure that it uses existing adb tools (Settings: "Use custom Android SDK Tools")
+  - Install watchman (do this globally):
+      ```bash
+      $ git clone https://github.com/facebook/watchman.git
+      $ cd watchman
+      $ git checkout master
+      $ ./autogen.sh
+      $ ./configure make
+      $ sudo make install
+      ```
+      Configure your kernel to accept a lot of file watches, using a command like:
+      ```bash
+      $ sudo sysctl -w fs.inotify.max_user_watches=1048576
+      ```
+
+- Clone repository and configure:
+    ```bash
+    $ git clone git@github.com:RocketChat/Rocket.Chat.ReactNative.git
+    $ cd Rocket.Chat.ReactNative
+    $ npm install
+    $ npm install -g react-native-cli
+    ```
+
+- Run application
+  - Start emulator
+  - Start react packager: `$ react-native start`
+  - Run in emulator: `$ react-native run-android`