fix JCA integration demo packge and change readme.txt
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Key: CXF-761
URL: https://issues.apache.org/jira/browse/CXF-761
Project: CXF
Issue Type: Bug
Components: Integration
Affects Versions: 2.0
Reporter: Jianfeng Zhang
Attachments: build.xml
change build.xml for packaging files.
modify readme.txt file for license file if need.
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