* Add custom license header style in order to comply with Google's Checkstyle format
* Update license headers to comply with Google's Checkstyle format
The source directory was not working in the 2019.09 version of Eclipse. The
problem was in the layout of the project: after the src/main/java and
src/test/java, the directory was naed com.iluwatar.pipeline. It should've
been com/iluwatar/pipeline. This follows the hierarchy of all of the other
patterns.
Once these files were moved, the Pipeline project compiled without errors.