adding github plugin

plugins/github/_github

@@ -0,0 +1,39 @@
+#compdef github
+#autoload
+
+# github zsh completion, based on homebrew completion
+
+local -a _1st_arguments
+_1st_arguments=(
+  'browse:Open this repo in a web browser'
+  'clone:Clone a repo'
+  'config:Automatically set configuration info, or pass args to specify'
+  'create-from-local:Create a new GitHub repository from the current local repository'
+  'create:Create a new empty GitHub repository'
+  'fetch:Fetch from a remote to a local branch'
+  'fetch_all:Fetch all refs from a user'
+  'fork:Forks a GitHub repository'
+  'home:Open this repos master branch in a web browser'
+  'ignore:Ignore a SHA from github network commits'
+  'info:Info about this project'
+  'issues:Project issues tools'
+  'network:Project network tools - sub-commands : web [user], list, fetch, commits'
+  'network --after:Only show commits after a certain date'
+  'network --applies:Filter commits to patches that apply cleanly'
+  'open:Open the given user/project in a web browser'
+  'pull-request:Generate the text for a pull request'
+  'pull:Pull from a remote'
+  'search:Search GitHub for the given repository name'
+  'track:Track another users repository'
+)
+
+local expl
+local -a pkgs installed_pkgs
+
+_arguments \
+  '*:: :->subcmds' && return 0
+
+if (( CURRENT == 1 )); then
+  _describe -t commands "github subcommand" _1st_arguments
+  return
+fi

plugins/github/github.plugin.zsh

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+# add github completion function to path
+fpath=($ZSH/plugins/github $fpath)
+autoload -U compinit
+compinit -i