update: remove Bintray/JCenter from EAP instruction (JetBrains#2079)

* update: remove Bintray from EAP instruction

* fix: fixed coroutines version in code blocks; formatting corrections

Co-authored-by: Ekaterina.Volodko <ekaterina.volodko@jetbrains.com>

Author: p7nov

docs/topics/configure-build-for-eap.md

@@ -6,8 +6,7 @@ You only need to configure your build manually for existing projects — project
 
 To configure your build to use the EAP version of Kotlin, you need to: 
 
-* Specify the EAP version of Kotlin. Available EAP versions are listed [here](eap.md#build-details). 
-* Add the EAP repository to the build – <https://dl.bintray.com/kotlin/kotlin-eap>.
+* Specify the EAP version of Kotlin. Available EAP versions are listed [here](eap.md#build-details).
 * Change the versions of dependencies to EAP ones.
 The EAP version of Kotlin may not work with the libraries of the previously released version. 
 
@@ -20,114 +19,44 @@ The following procedures describe how to configure your build in Gradle and Mave
 
 This section describes how you can:
 
-* [Adjust the Kotlin version and add the EAP repository](#adjust-the-kotlin-version-and-add-the-eap-repository)
+* [Adjust the Kotlin version](#adjust-the-kotlin-version)
 * [Adjust versions in dependencies](#adjust-versions-in-dependencies)
 
-### Adjust the Kotlin version and add the EAP repository 
+### Adjust the Kotlin version
 
-Depending on your configuration approach, you need to perform different steps in your build files. 
-This section describes common options, but if you use a different approach, you can refer to [Gradle documentation](https://docs.gradle.org/) for assistance.
-
-This section covers:
-
-* [Option 1. Configure in the build and settings files](#option-1-configure-in-the-build-and-settings-files)
-* [Option 2. Configure in the build file only](#option-2-configure-in-the-build-file-only)
-
-#### Option 1. Configure in the build and settings files 
+In the `plugins` block within `build.gradle(.kts)`, change the `KOTLIN-EAP-VERSION` to the actual EAP version,
+such as `%kotlinEapVersion%`. Available EAP versions are listed [here](eap.md#build-details).
 
-1. In the `plugins` block within `build.gradle` (`build.gradle.kts`), change the `KOTLIN-EAP-VERSION` to the actual EAP version, such as `%kotlinEapVersion%`. Available EAP versions are listed [here](eap.md#build-details).
-    
-    Alternatively, you can specify the EAP version in the `pluginManagement` block in `settings.gradle` (`settings.gradle.kts`) – see [Gradle documentation](https://docs.gradle.org/current/userguide/plugins.html#sec:plugin_version_management) for details.
-2. In the `repositories` block, specify the EAP repository – <https://dl.bintray.com/kotlin/kotlin-eap> – for dependencies.
+Alternatively, you can specify the EAP version in the `pluginManagement` block in `settings.gradle(.kts)` – see [Gradle documentation](https://docs.gradle.org/current/userguide/plugins.html#sec:plugin_version_management) for details.
 
 Here is an example for the Multiplatform project.
 
 <tabs>
 
 ```groovy
 plugins {
-    id 'java' 
-    id 'org.jetbrains.kotlin.multiplatform' version 'KOTLIN-EAP-VERSION'
+   id 'java'
+   id 'org.jetbrains.kotlin.multiplatform' version 'KOTLIN-EAP-VERSION'
 }
 
 repositories {
-    mavenCentral()
-    maven { url 'https://dl.bintray.com/kotlin/kotlin-eap' }
-    maven { url 'https://kotlin.bintray.com/kotlinx' }
+   mavenCentral()
 }
 ```
 
 ```kotlin
 plugins {
-    java
-    kotlin("multiplatform") version "KOTLIN-EAP-VERSION"
-}
-repositories {
-    mavenCentral()
-    maven ("https://dl.bintray.com/kotlin/kotlin-eap")
-    maven ("https://kotlin.bintray.com/kotlinx")
-}
-```
-
-</tabs>
-
-* In the `pluginManagement` block within `settings.gradle` (`settings.gradle.kts`), specify the EAP repository – <https://dl.bintray.com/kotlin/kotlin-eap>.
-
-<tabs>
-
-```groovy
-pluginManagement {
-    repositories {
-        mavenCentral()
-        gradlePluginPortal()
-        maven { url 'https://dl.bintray.com/kotlin/kotlin-eap' }
-    }
+   java
+   kotlin("multiplatform") version "KOTLIN-EAP-VERSION"
 }
-```
 
-```kotlin
-pluginManagement { 
-    repositories { 
-        mavenCentral() 
-        gradlePluginPortal() 
-        maven ("https://dl.bintray.com/kotlin/kotlin-eap")
-    }
+repositories {
+   mavenCentral()
 }
 ```
 
 </tabs>
 
-#### Option 2. Configure in the build file only 
-
-1. In `build.gradle` (`build.gradle.kts`), change the `KOTLIN-EAP-VERSION` in the `buildscript` block to the actual EAP version,
-such as `%kotlinEapVersion%`. Available EAP versions are listed [here](eap.md#build-details).
-2. Add the EAP repository – <https://dl.bintray.com/kotlin/kotlin-eap> – to the `buildscript` block.
-3. In the `repositories` block, specify the EAP repository for dependencies. 
-
-```groovy
-buildscript {
-    repositories {
-        mavenCentral()
-        gradlePluginPortal()
-        maven { url "https://dl.bintray.com/kotlin/kotlin-eap" }
-    }
-
-    dependencies {
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:KOTLIN-EAP-VERSION"
-    }
-}
-
-apply plugin: "kotlin"
-
-repositories {
-    maven { url "https://dl.bintray.com/kotlin/kotlin-eap" }
-}
-
-dependencies {
-    compile "org.jetbrains.kotlin:kotlin-stdlib"
-}
-```
-
 ### Adjust versions in dependencies
 
 If you use kotlinx libraries in your project, your versions of the libraries may not be compatible with the EAP version of Kotlin.
@@ -149,13 +78,13 @@ For the **kotlinx.coroutines** library, add the version number – `%coroutinesE
 
 ```groovy
 dependencies {
-    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.5-1.4-M1"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:%coroutinesEapVersion%"
 }
 ```
 
 ```kotlin
 dependencies {
-    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.5-1.4-M1")
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:%coroutinesEapVersion%")
 }
 ```
 
@@ -174,24 +103,16 @@ Available EAP versions are listed [here](eap.md#build-details).
 
     <repositories>
         <repository>
-            <id>bintray.kotlin.eap</id>
-            <name>Bintray Kotlin EAP Repository</name>
-            <url>https://dl.bintray.com/kotlin/kotlin-eap</url>
+           <id>mavenCentral</id>
+           <url>https://repo1.maven.org/maven2/</url>
         </repository>
     </repositories>
 
     <pluginRepositories>
-        <pluginRepository>
-            <releases>
-                <enabled>true</enabled>
-            </releases>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-            <id>bintray.kotlin.eap</id>
-            <name>Bintray Kotlin EAP Repository</name>
-            <url>https://dl.bintray.com/kotlin/kotlin-eap</url>
-        </pluginRepository>
+       <pluginRepository>
+          <id>mavenCentral</id>
+          <url>https://repo1.maven.org/maven2/</url>
+       </pluginRepository>
     </pluginRepositories>
 
     <dependencies>