upload.gradle

def siteUrl = 'https://github.com/mkoslacz/Moviper'      // Homepage URL of the library
def gitUrl = 'https://github.com/mkoslacz/Moviper.git'   // Git repository URL
group = "com.mateuszkoslacz.moviper"                     // Maven Group ID for the artifact

install {
    repositories.mavenInstaller {
        // This generates POM.xml with proper parameters
        pom {
            project {
                packaging 'aar'
                // Add your description here
                url siteUrl

                // Set your license
                licenses {
                    license {
                        name 'The Apache Software License, Version 2.0'
                        url 'http://www.apache.org/licenses/LICENSE-2.0.txt'
                    }
                }
                developers {
                    developer {
                        id 'mkoslacz'
                        name 'Mateusz Koslacz'
                        email 'mateusz.koslacz@gmail.com'
                    }
                }
                scm {
                    connection gitUrl
                    developerConnection gitUrl
                    url siteUrl
                }
            }
        }
    }
}

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

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

afterEvaluate {
    javadoc.classpath += files(android.libraryVariants.collect { variant ->
        variant.javaCompile.classpath.files
    })
}

task javadocJar(type: Jar, dependsOn: javadoc) {
    classifier = 'javadoc'
    from javadoc.destinationDir
}
artifacts {
    archives javadocJar
    archives sourcesJar
}

Properties properties = new Properties()
properties.load(project.rootProject.file('local.properties').newDataInputStream())

// https://github.com/bintray/gradle-bintray-plugin
bintray {
    user = properties.getProperty("bintray.user")
    key = properties.getProperty("bintray.apikey")

    configurations = ['archives']
    pkg {
        repo = "Moviper"
        websiteUrl = siteUrl
        vcsUrl = gitUrl
        licenses = ["Apache-2.0"]
        publish = true
        version {
            gpg {
                sign = true //Determines whether to GPG sign the files. The default is false
                passphrase = properties.getProperty("bintray.gpg.password")
                //Optional. The passphrase for GPG signing'
            }
        }
    }
}