Update build.gradle

Author: jitpack-io

library/build.gradle

@@ -23,11 +23,20 @@ dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
 }
 
+// build a jar with source files
 task sourcesJar(type: Jar) {
     from android.sourceSets.main.java.srcDirs
     classifier = 'sources'
 }
-
 artifacts {
     archives sourcesJar
 }
+
+// uncomment to build a jar file in addition to the default aar file
+//android.libraryVariants.all { variant ->
+//    def name = variant.buildType.name
+//    def task = project.tasks.create "jar${name.capitalize()}", Jar
+//    task.dependsOn variant.javaCompile
+//    task.from variant.javaCompile.destinationDir
+//    artifacts.add('archives', task);
+//}