Update build.gradle

Fixes #33. I had the same problem.
Issue #14: Added test that demonstrates the issue.
Issue #14: Use createDirectoryEntry to create empty directory.
Issue #14: Proposal for an extension to the existing DSL.
Issue #3: Use Java 7 NIO to determine symlink and preserve it for RPM.
Issue #3: Use Java 7 NIO to determine symlink and preserve it for Debian.
Issue #3: Use public API.
Issue #3: Same as getRelativePath().getPathString().
Issue #3: Extracted logic.
Issue #3: Not needed.
Issue #3: Simplified logic.
Issue #3: Unified parameter names.
Issue #3: Simplified logic.
Issue #14: Updated documentation.
Merge pull request #42 from nebula-plugins/issue-14

Allow for creating empty directories
Merge pull request #37 from kgeis/patch-1

Update build.gradle
Issue #3: Removed println.
Workaround for avoiding SkipEmptySourceFilesTaskExecuter from marking the task UP-TO-DATE if no sources are provided.
This task now actually executes its action so account for it. The default package name would be too long for Redline RPM.
Merge pull request #45 from nebula-plugins/create-archive-without-sources

Workaround for avoiding SkipEmptySourceFilesTaskExecuter from marking th...