ApiClient.kt

class ApiClient {

  companion object {

    private const val BASE_URL = "https://api.coinmarketcap.com/v1/"

    fun getClient(): Retrofit {
      val okHttpClient = OkHttpClient.Builder().build()
      val moshi = Moshi.Builder().build()

      return Builder().client(okHttpClient).baseUrl(BASE_URL)
          .addConverterFactory(MoshiConverterFactory.create(moshi))
          .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
          .build()
    }
  }
}