Merge pull request #1947 from dongweiming/add-sudo

Add sudo plugin

plugins/sudo/sudo.zsh

+# ------------------------------------------------------------------------------
+# Description
+# -----------
+#
+# sudo will be inserted before the command
+#
+# ------------------------------------------------------------------------------
+# Authors
+# -------
+#
+# * Dongweiming <ciici123@gmail.com>
+#
+# ------------------------------------------------------------------------------
+
+sudo-command-line() {
+[[ -z $BUFFER ]] && zle up-history
+[[ $BUFFER != sudo\ * ]] && BUFFER="sudo $BUFFER"
+zle end-of-line 
+}
+zle -N sudo-command-line
+# Defined shortcut keys: [Esc] [Esc]
+bindkey "\e\e" sudo-command-line