Add Lerna completion options

completion/available/lerna.completion.bash

@@ -0,0 +1,25 @@
+#!/bin/bash
+# Usage:
+#
+# To enable bash <tab> completion for lerna, add the following line (minus the
+# leading #, which is the bash comment character) to your ~/.bashrc file:
+#
+# eval "$(lerna --completion=bash)"
+# Enable bash autocompletion.
+function _lerna_completions() {
+  # The currently-being-completed word.
+  local cur compls
+
+  cur="${COMP_WORDS[COMP_CWORD]}"
+
+  # Options
+  compls="add bootstrap changed clean create diff exec \
+          import init link list publish run version    \
+           --loglevel --concurrency --reject-cycles    \
+           --progress --sort --no-sort --help          \
+           --version"
+
+  # Tell complete what stuff to show.
+  COMPREPLY=($(compgen -W "$compls" -- "$cur"))
+}
+complete -o default -F _lerna_completions lerna