additional tmux aliases
Fix chruby plugin to not complain if chruby is *not* installed
Throw an error message when $WORKON_HOME is not set

Took me a while to figure this one out, and I have a default installation of virtualenvwrapper -- this is a soft fix, just put an error message. But perhaps the fix should be to use the default value `~/.virtualenvs`.
Fixed output issues webith websearch plugin.

- if user has rm set as an alias to 'rm -i' user is prompted to whether to
  remove the nohup.out file.

 $ ddg fools
	nohup: ignoring input and appending output to ‘nohup.out’
	rm: remove regular empty file ‘nohup.out’?

- if output redirected to a file nohup will not create nohup.out and rm is
  unecessary.
Added Yii2 command completion
Add yii2 readme
mira theme shows active node, ruby and java versions
added node- before node version for consistency
Updated Yii2 command completion
Merge pull request #3397 from peteches/master

Fixed output issues webith websearch plugin.
Merge pull request #3352 from benjaoming/virtualenvwrapper_workon_unset

Throw an error message when $WORKON_HOME is not set
Merge pull request #3338 from eripa/chruby_fix

Fix chruby plugin to not complain if chruby is *not* installed
Merge pull request #3146 from typekpb/tmux-aliases

additional tmux aliases
Merge pull request #3404 from ekaragodin/master

Added Yii2 command completion
Merge pull request #3407 from rawberg/mira-theme

mira theme shows active node, ruby and java versions
Brings all directory stuff to directories.zsh

- Cleans out aliases.zsh.
- Removes unneeded cd function.
Pushes autoenv code to its plugin.

Sources the activate.sh file or informs the user, that its not
available.
Overriding the cd function, as it was formerly done, is not needed
anymore, activate.sh does this by itself.
Refactors history alias and moves it.

More compact case statement instead of the ugly if elif... else
statement. Moves it to history.zsh
Moves remaining aliases to misc and deletes file.

There were only three aliases left in aliases.zsh
File deleted!
Moves a bindkey call from misc to key-bindings.