Added the .gitignore

Added rules for GIT to ignore files.
Initialize CloudClipJavaClient

Adding already existing files of the CloudClipJavaClient project. It
comprises currentl a raw mechanism to monitor the system cloud clipboard.
The monitor also provides a subscriber mechanism. Which is currently used
in the Controller, to log changes to the Clipboard
Updated .gitignore to exclude java class files

Java class files should no longer get added. Both the directory classes/
and *.class files are ignored.
Initialize the CloudClipServer Project

Adding the available Files of the CloudClipServer project. The Project
currently defines two Entities, a Clip and a ClipBoard, with a One-To-Many
relation. A user specific Clipboard is exposed using cloudendpoints.