Started documenting STAF. Added Layout Diagram.
Removed STAF.ucls
Updated the STAF documentation with design and layout diagram
Added Drag and drop features
Replaced STAF doc with pdf
Added PDF Parser
Seperated enums and Beans
Added a builder pattern for pdfreader method
Merge pull request #2 from asgunasekaran/feature/STAF_v2__JDK1.7

Feature/staf v2  jdk1.7