Added javadocs and sources compilation tasks

graphenej/build.gradle

@@ -37,3 +37,23 @@ dependencies {
     compile 'com.jakewharton.rxrelay2:rxrelay:2.0.0'
     compile 'com.squareup.okhttp3:okhttp:3.5.0'
 }
+
+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))
+}
+
+task javadocJar(type: Jar, dependsOn: javadoc) {
+    classifier = 'javadoc'
+    from javadoc.destinationDir
+}
+
+artifacts {
+    archives javadocJar
+    archives sourcesJar
+}