Import Facebook SDK in Android Studio

Error: (10) Plugin with id'com.android.library'not found.

apply plugin: 'com.android.library'

repositories {
  mavenCentral()
}

project.group = 'com.facebook.android'

dependencies {
    compile files ('libs/android-support-v4.jar')
    compile files ('libs/bolts-android-1.1.2.jar')
}

android{android{
    compileSdkVersion Integer.parseInt(project.ANDROID_BUILD_SDK_VERSION)
    buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION

    defaultConfig {
        minSdkVersion Integer.parseInt(project.ANDROID_BUILD_MIN_SDK_VERSION)
        targetSdkVersionInteger.parseInt(project.ANDROID_BUILD_TARGET_SDK_VERSION)
    }

    US>lintOptions{
        abortOnError false
    }

    sourceSets{
        main{
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs=['src']
            res.srcDirs=['res']
        }
    }
}

apply plugin: 'maven'
apply plugin: 'signing'

defisSnapshot=version.endsWith('-SNAPSHOT')
defossrhUsername=hasProperty('NEXUS_USERNAME'?NEXUS_USERNAME:"
defossrhPassword=hasProperty('NEXUS_PASSWORD'?NEXUS_PASSWORD:'

tasksetVersion {
    // The version will be delivered from source
    project.version=null
    def sdkVersionFile=file('src/com/facebook/FacebookSdkVersion.java')
    sdkVersionFile.eachLine{
        def matcher=(it=~/(?:.*BUILD=\")(.*)(?:\".*)/)
        if(matcher.matches()){
          project.version=matcher[0][1]
          return
        }
    }
    if(project.version.is('unspecified')){
      row new GradleScriptException ('Version could not be found.', null)
    }
}

uploadArchives {
    repositories.mavenDeployer {
        beforeDeployment {MavenDeployment deployment->signing.signPom(deployment)}

        repository(url: "https://oss.sonatype.org/service/local/staging/deploy/maven2/") {
            authentication(userName:ossrhUsername, password:ossrhPassword)
        }

        snapshotRepository(url: "https://oss.sonatype.org/content/repositories/snapshots/") {
            authentication(userName:ossrhUsername, password:ossrhPassword)
        }

        pom.project{
            name 'Facebook-Android-SDK'
            artifactId='facebook-android-sdk'
            packaging 'aar'
            description 'Facebook Android SDK'
            url'https://github.com/facebook/facebook-android-sdk'

            scm{
                connection'scm:[email protected]:facebook/facebook-android-sdk.git'
                developerConnection'scm:[email protected]:facebook/facebook-android-sdk.git'
                url'https://github.com/facebook/facebook-android-sdk'
            }

            licenses {
                license {
                    name 'The Apache Software License, Version 2.0'
                    url'https://github.com/facebook/facebook-android-sdk/blob/master/LICENSE.txt'
                    distribution 'repo'
                }
            }

            developers {
                developer {
                    id'facebook'
                    name 'Facebook'
                }
            }
        }
    }
}

uploadArchives.dependsOn (setVersion)

US>signing {
    required {!isSnapshot&gradle.taskGraph.hasTask("uploadArchives")}
    sign configurations.archives
}

task androidJavadocs (type: Javadoc) {
    source=android.sourceSets.main.java.srcDirs
    classpath+=project.files(android.getBootClasspath().join(File.pathSparator))
}

task androidJavadocsJar(type:Jar,dependsOn:androidJavadocs){
    classifier = 'javadoc'
    from androidJavadocs.destinationDir
}

task androidSourcesJar(type:Jar) {
    classifier = 'sources'
    from android.sourceSets.main.java.sourceFiles
}

artifacts {
    archives androidSourcesJar
    archives androidJavadocsJar
}

afterEvaluate {
    androidJavadocs.classpath+=project.android.libraryVariants.toList().first().javaCompile.classpath
}

setting Gradle
include ':apname', ':Facebook'