Add Dependcy for Logging Interceptor

build.gradle

dependencies {
  compile fileTree(include: ['*.jar'], dir: 'libs')
  
  //Retrofit
  compile 'com.squareup.retrofit2:retrofit:2.1.0'
  compile 'com.squareup.retrofit2:converter-gson:2.1.0'
  compile 'com.squareup.okhttp3:logging-interceptor:3.3.1'
}