rename shell to basicshell
move shell to sub namespace
add shell interface.
fix example.php after namespace move.
add first version of FromLinuxCommandTranslator. Initially no different from the basic.
add first version of LinuxShell. Initially no different to basic shell.
Fix docblock
pass the enviroment through to the FromLinuxTranslator.
switch tested command to git help so that the test works when not in a repo.
add ls and which switching to Linux translator.