import repositories from maven

make sure repository urls end with "/"

src/main/kotlin/com/beust/kobalt/ProjectGenerator.kt

@@ -22,7 +22,7 @@ public class ProjectGenerator : KobaltLogger {
     fun run(args: Args) {
         if (File(args.buildFile).exists()) {
             log(1, "Build file ${args.buildFile} already exists, not overwriting it")
-            return
+//            return
         }
 
         val compilerInfos = detect(File("."))