Fixed building process. Removed unused versioning.

Author: imartinez

build.gradle

@@ -2,14 +2,17 @@ apply plugin: 'groovy'
 apply plugin: 'maven'
 
 group = "com.github.bq"
-version = "0.2.4"
 
 compileJava {
     apply plugin: 'java'
     sourceCompatibility = 1.7
     targetCompatibility = 1.7
 }
 
+repositories {
+    mavenCentral()
+}
+
 dependencies {
     compile gradleApi()
     compile localGroovy()
@@ -19,7 +22,8 @@ dependencies {
     testCompile 'junit:junit:4.11'
 }
 
-task sourcesJar(type: Jar) {
+task sourcesJar(type: Jar, dependsOn: classes) {
+    classifier 'sources'
     from sourceSets.main.allSource
 }