title: Trying to add module to project. Plugin with id 'kotlin-android' not found
body: <p>I am trying to add a epub reader library to a project I have already created. The library I am trying to add to my project as a moduel is the Folio Reader Library (<a href="https://github.com/FolioReader/FolioReader-Android" rel="noreferrer">https://github.com/FolioReader/FolioReader-Android</a>). I have downloaded this library on my computer and have tried adding it through File -> New -> Import Module. However, during the process I receive this error:</p>
  
  <pre><code>ERROR: Plugin with id 'kotlin-android' not found.
  </code></pre>
  
  <p>This file is located in the build.gradle file of the Folio Reader Library.</p>
  
  <p>build.gradle file:</p>
  
  <pre><code>apply plugin: 'com.android.library'
  apply from: '../config/quality/quality.gradle'
  apply plugin: 'com.github.dcendents.android-maven'
  apply plugin: 'kotlin-android'
  apply plugin: 'kotlin-android-extensions'
  
  ext {
  bintrayRepo = 'maven'
  bintrayName = 'folioreader'
  
  publishedGroupId = 'com.folioreader'
  libraryName = 'FolioReader'
  artifact = 'folioreader'
  
  libraryDescription = 'An epub reader for Android'
  
  siteUrl = 'https://github.com/FolioReader/FolioReader-Android'
  gitUrl = 'https://github.com/FolioReader/FolioReader-Android.git'
  
  libraryVersion = versions.folioreaderSdk
  
  developerId = 'mobisystech'
  developerName = 'Folio Reader'
  developerEmail = 'mahavir@codetoart.com'
  
  licenseName = 'FreeBSD License'
  licenseUrl = 'https://en.wikipedia.org/wiki/FreeBSD_Documentation_License#License'
  allLicenses = ["FreeBSD"]
  }
  
  android {
  useLibrary 'org.apache.http.legacy'
  compileSdkVersion versions.androidCompileSdk
  
  defaultConfig {
      minSdkVersion versions.androidMinSdk
      targetSdkVersion versions.androidTargetSdk
      versionCode versions.projectVersionCode
      versionName versions.projectVersionName
      vectorDrawables.useSupportLibrary = true
  }
  
  sourceSets {
      main {
          manifest.srcFile 'AndroidManifest.xml'
          java.srcDirs = ['src/main/java']
          res.srcDirs = ['res']
      }
      test {
          java.srcDirs = ['src/test/java']
      }
  }
  
  packagingOptions {
      exclude 'META-INF/ASL2.0'
      exclude 'META-INF/DEPENDENCIES.txt'
      exclude 'META-INF/LICENSE.txt'
      exclude 'META-INF/NOTICE.txt'
      exclude 'META-INF/NOTICE'
      exclude 'META-INF/LICENSE'
      exclude 'META-INF/DEPENDENCIES'
      exclude 'META-INF/notice.txt'
      exclude 'META-INF/license.txt'
      exclude 'META-INF/dependencies.txt'
      exclude 'META-INF/LGPL2.1'
      exclude 'META-INF/services/javax.annotation.processing.Processor'
  }
  
  lintOptions {
      abortOnError false
      lintConfig file("lint.xml")
  }
  
  checkstyle {
      ignoreFailures = true
  }
  }
  
  apply from: '../folioreader/bintray/installv1.gradle'
  dependencies {
  implementation fileTree(include: ['*.jar'], dir: 'libs')
  
  implementation "androidx.appcompat:appcompat:$versions.appcompat"
  implementation "androidx.constraintlayout:constraintlayout:$versions.constraintLayout"
  implementation "androidx.recyclerview:recyclerview:$versions.recyclerview"
  implementation "com.google.android.material:material:$versions.material"
  testImplementation 'junit:junit:4.12'
  
  implementation 'org.slf4j:slf4j-android:1.7.25'
  implementation 'com.daimajia.swipelayout:library:1.2.0@aar'
  
  //Kotlin
  implementation "org.jetbrains.kotlin:kotlin-stdlib:$versions.kotlin"
  
  implementation 'org.greenrobot:eventbus:3.1.1'
  
  implementation "com.fasterxml.jackson.core:jackson-core:$versions.jackson"
  implementation "com.fasterxml.jackson.core:jackson-annotations:$versions.jackson"
  implementation "com.fasterxml.jackson.core:jackson-databind:$versions.jackson"
  implementation "com.fasterxml.jackson.module:jackson-module-kotlin:$versions.jackson"
  implementation "com.google.code.gson:gson:$versions.gson"
  
  implementation "com.squareup.retrofit2:retrofit:$versions.retrofit"
  implementation "com.squareup.retrofit2:converter-jackson:$versions.retrofit"
  implementation "com.squareup.retrofit2:converter-gson:$versions.retrofit"
  
  // R2 modules
  api("com.github.codetoart:r2-shared-kotlin:$versions.r2SharedKotlin") {
      changing = true
  }
  api("com.github.codetoart:r2-streamer-kotlin:$versions.r2StreamerKotlin") {
      exclude group: "org.slf4j", module: "slf4j-api"
      changing = true
  }
  
  // Only ReflectionUtils in Spring framework is used
  implementation 'org.springframework:spring-core:4.3.19.RELEASE'
  
  // Lifecycle
  implementation "androidx.lifecycle:lifecycle- 
  extensions:$versions.lifecycle"
  }
  apply from: '../folioreader/bintray/bintrayv1.gradle'
  </code></pre>
  
  <p>I have tried some of the answers posted here but they do not work.
  How can I solve this problem?</p>
  
  <p>EDIT:</p>
  
  <p>I added</p>
  
  <pre><code>classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.1.4-3"
  </code></pre>
  
  <p>in my dependencies and have received the following error:</p>
  
  <pre><code>ERROR: Could not get unknown property 'versions' for object of type org.gradle.api.internal.plugins.DefaultExtraPropertiesExtension.
  </code></pre>
  
  <p>it is occuring on line 20 on the same build.gradle file:</p>
  
  <pre><code>libraryVersion = versions.folioreaderSdk
  </code></pre>
  
  <p>updating to newer version does not work:</p>
  
  <pre><code>classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.40"
  </code></pre>