Added copy option
must add process to the list before executing it or it might be added after the command has finished and cause æsh to believe that we're running a command although its already finished.
optimize finding backslash at end of line + cleanups
Merge pull request #81 from danielsoro/copy

Added copy option
[AESH-249]
fixes bug in redirection, appending still doesnt work properly
fix bug when history doesnt show the correct line caused by optimizing when delta is -1
[AESH-254] Added setLastModified and lastModified at Resource.
Merge pull request #82 from danielsoro/AESH-254

[AESH-254] Added setLastModified and lastModified at Resource.
[AESH-249]
fixed javadoc