Load symlink custom files

    `(.)` search only real files.
    The deletion of it enables searching symlink *.zsh files
Use grep to detect if untracked files exist instead of storing all the output of ls-files.
add --directory flag
Fixed unmached " in yum plugin
remove readlink call and clean up
rbenv plugin now uses 'brew --prefix rbenv' command to find rbenv folder
sanitized code according to coding style
correct the ruby version label for rbenv
Merge pull request #1168 from r-darwish/yum-plugin-fix

Fixed unmached " in yum plugin
Merge pull request #1173 from walkah/virtualenvwrapper-osx-fix

Readlink is different on OS X
Merge pull request #1159 from kristi/master

Steef theme - Improved git untracked file detection
Merge pull request #1182 from jugyo/patch-1

correct the ruby version label of the 'nebirhos' theme for rbenv
Merge pull request #1126 from natsumesou/fix-ignore-symlink

Load symlink custom files
Merge pull request #1174 from insside/rbenv-homebrew-fix

rbenv plugin now uses 'brew --prefix rbenv' command to find rbenv folder
added plugin for jruby
added jexec
Fix finding git issue. http://stackoverflow.com/questions/592620/check-if-a-program-exists-from-a-bash-script
Merge pull request #1192 from rcakirerk/a39c9ffe5b7236b6e4dc78efa80b478cc411af7f

Fix finding git issue.
Merge pull request #1190 from vpacher/master

added jruby plugin
add git remote branch autocomplete