Automatically create bootstrap/src/main/resources if missing

Pr 10 removed bootstrap/src/main/resources/dependencies.xml from the git repo.
The directory has to be created inorder to be able to save the dependencies to the xml file,
so the directory has to be created if missing.

project/BootstrapUtility.scala

@@ -43,6 +43,12 @@ object BootstrapUtility {
       </dependencies>
 
     logger info "Saving dependency XML now."
+
+    // Create directory if not existent, otherwise saving will fail.
+    if (new File(dependencyXMLFileName).getParentFile.mkdir()) {
+      logger info "Created directory bootstrap/src/main/resources"
+    }
+
     XML.save(dependencyXMLFileName, xml)
     logger info "Finished saving XML file."
   }