created shell module [0.1.0]

This version introduces multiple enhancements:

created base shell class and shell script to remove cached files

Details of additions/deletions below:
--------------------------------------------------------------

Added:      /Lib/Core/Shell/Model/Abstract.php
            -- Added --
                base shell model

Added:      /Lib/Core/Shell/Helper/Cache.php
            -- Added --
                allo to clear cache

Added:      /Lib/Core/Shell/etc/config.ini
            -- Added --
                shell configuration

Modified:   /Lib/config.ini
            -- Added --
                core_shell enabled
            -- Updated --
                changed version from 0.13.0 to 0.14.0

Modified:   /shell/clear_cache.php
            -- Added --
                script to lunch clear cache helper