additional tmux aliases
Remove deprecated brew commands, update core commands

`brew services` and `brew server` were moved to homebrew-boneyard.
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`.
Added Xcode alias for deleting Derived Data.
autojump installed from github has mv the autojump.zsh to $HOME/.autojump/share/autojump/autojump.zsh
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
Fix aws.plugins.zsh check rule

Check _aws_zsh_completer_path had exist or not
fix(tools/check_for_upgrade): Don't source profile

Reverts #2296, but mostly #1883.

There is no need to source ~/.profile when this script is read. oh-my-zsh writes no configuration data in ~/.profile.

If the user wishes to use data within ~/.profile, then they should source it in another place.

Fixes #2315
Update the list of Heroku Postgres commands
Quote path in case $HOME has a space in it.

I've seen stranger things on OS X, unfortunately.
This reverts commit 1f5cecee4768be192e439a72a873a6cfe8720927.
added exec command to docker plugin
Merge pull request #3417 from stof/patch-1

Update the list of Heroku Postgres commands
Merge pull request #3410 from Superbil/master

Fix aws.plugins.zsh check rule
Merge pull request #3409 from unixorn/prevent-variable-clobbering

Add quoting to nvm.sh