#1 update readme

README.md

@@ -1 +1,46 @@
-moko-doctor
+# Mobile Kotlin doctor
+This is a script for KMM developers that allows you to check whether your working environment is configured. 
+
+## What does the *doctor* check?
+- Is *Git* installed
+- Is *XCode* / *Xcode Command Line* installed
+- Is *Android Studio* installed
+- Is *Cocoa Pods* installed
+- is *Xcode* configured
+- is *Android Studio* configured
+- is the *environment variables* installed
+
+
+## Usage
+
+Clone the repository for yourself and run the script:
+
+```bash
+./doctor.sh
+```
+
+## Xcode environments
+
+In our projects, we run the *Gradle* build from *Xcode*. At the start of the build, the [*Gradle Daemon*](https://docs.gradle.org/current/userguide/gradle_daemon.html) is also launched. 
+If there are several *JDKs* on the computer, *Xcode* starts the build from the highest version.
+
+The reason is that a shell ran from *Xcode* build phase is [non-interactive shell](https://www.vanimpe.eu/2014/01/18/different-shell-types-interactive-non-interactive-login/).
+
+In order for Xcode to see the *JAVA_HOME* and *ANDROID_SDK_ROOT* variables that we have declared, you need to run the script:
+
+```bash
+./setup_xcode_environment.sh
+```
+
+This script passes the *JAVA_HOME* and *ANDROID_SDK_ROOT* variables specified in your environment (in .zshrc or .bash-profile) to the *Xcode* environment , which is launched when the project is built.
+
+After rebooting the system, it can check this, it is enough to enter a couple of lines of build phases.
+
+![pods debub](images/podsDebug.png)
+
+Run the project build using *Cmd+B*. 
+
+In *Build* we see:
+
+![pods debub](images/buildSuccess.png)
+