Some commands from README seem to be outdated

[shurup]

For example, kdebug is described in the project's README, however I can't see any mentions of this function in the current fubectl.source. (I haven't made a PR for this as I am not sure whether kdebug should actually exist for fubectl.)

At the same time, quite interesting commands including ked, ksec, and konsole are defined in the source file, however they are missing in the README.

[eshepelyuk]

I suggest to replace command description in README with the suggestion to run

 $ khelp