refactor : replace RetryOutException  to IOException, add a String inputed methods.
deleted
Merge branch 'master' of git://github.com/firejun/roma-java-client-light
refactor : not to read the last line("END\r\n") in the readValue() method.
refactor : add ClientObject class for a plugins client.
edit log messages.
add gets command.
refactor : reduced the number of times of the memory copy in the write() method.
bugfix : for in case of an empty character.
refactor : for notation of a plugin client.
bugfix : in irregular case
add gets, cas command test
refactor : add a some useful methods
add list plugin and unit test.