Setting up the build script

We will be using the Gradle build system for our project. 

Adding Kotlin dependency

Kotlin language is added as a Gradle dependency in the project:

    // Kotlin
    compile "org.jetbrains.kotlin:kotlin-stdlib-jre8:$kotlin_version"

Adding Ktor dependencies

The Ktor file is located on bintray and it has a dependency on the coroutines library available in kotlinx, so we will need to add the following repositories to the repositories block:

    maven { url "http://dl.bintray.com/kotlin/ktor" }
    maven { url "https://dl.bintray.com/kotlin/kotlinx" }

We will add an extra property for holding the value of the latest version of Ktor:

   ext.ktor_version = '0.9.0-alpha1'

Now add the ktor-core dependency in our build.gradle:

    // ktor
    compile "io.ktor:ktor:$ktor_version"

As we discussed earlier, Ktor can be deployed in various environments. For our news feed application, we will use Netty as our server by adding an extra dependency:

    compile "io.ktor:ktor-server-netty:...