[io] implement two new class for input and output (test are added too).
This classes are for any communication via streams at console, file or string write/read (implement in test case).

Other files of project formatted to the Eclipse view (this IDE now be major for this project).
At Eclipse .classpath file change made for using JUnit.
[Merge]
[Output] in OutputTest added os independent sepatator of new line, so test
now pass on any OS.