* added updated example codes
* updated example code StringToCharStream
* deleted StringToCharStream.java locally
* removed redundant file
* added code for apache commons collection SetUtils
* refactored example code
* added example code for bytebuddy
* added example code for PCollections
* update pom
* refactored tests for PCollections
* spring security xml config
* spring security xml config
* remove redundant comment
* example code for apache-shiro
* updated example code for Vavr Collections
* updated Vavr's Collection example
* updated Vavr Collection file
* updated example code for Apache Shiro
* updated Vavr Collections example
* added example code for N1QL
* update example code for N1QL
* added integration test for N1QL
* update N1QL Example code
* update the N1QL example Code
* rename module to couchbase
* rename module to couchbase
* change module name in parent module and pom
* added cas-server module
* added cas secured app for Spring SSO with CAS
* refactor cas modules into cas folder
