Merge pull request #2 from denuwanthi/master

delete duplictaed servlet folder
Refactor servlet
Listener refactored
Registry design changed
Refactored to have single f in protobuf
Registry redesignned
target deleted
targets deleted
PB POJO name changed
Moving to JAXB based parsing
Moving to JAXB based parsing
JAXB parsing refactored
added schema validation