SheptunovaAA

/**
don't forget to add in app gradle:
    compile 'com.squareup.retrofit2:retrofit:2.3.0'

and add INTERNET permission to AndroidManifest
  <manifest xmlns:android="http://schemas.android.com/apk/res/android"
   ...>
    <uses-permission android:name="android.permission.INTERNET" />
    <application... /> 
    />