.gitglobalignore: globally ignore thumbnails on OSX (.DS_Store)
.zsh: display short version of git status by default
.zsh: add some more docker aliases
.zsh: add local ~/.zsh/completion/ directory to $fpath so we can embed our own zsh completion files
.zsh: add completion file for docker
.zsh: fix 'df' aliases for OSX especially
.ssh: add default configuration for vagrant VMs