Override offical brew plugin. Add brew prefix to PATH
Brewed Nodejs will place npm-installed binaries into different path
than compiled it manually. Add this path to PATH
Brewed Ruby will place gem-installed binaries into different path
than compiled it  manually. Add this path to PATH
Brewed Python will place pip-installed executable scripts into different
path than compiled it manually. Add this path to PATH
Fixed typo :(
Remove duplication from PATH
Clean up variables created by brew-related plugins enable
Document for enabled brew-related plugins
Merge branch 'zsh-brew-plugin' into zsh