Add Fastlane plugin

plugins/fastlane/fastlane.plugin.zsh

@@ -0,0 +1,20 @@
+_fastlane_complete() {
+  local word completions
+  word="$1"
+
+  # look for Fastfile either in this directory or fastlane/ then grab the lane names
+  if [[ -e "Fastfile" ]] then
+    file="Fastfile"
+  elif [[ -e "fastlane/Fastfile" ]] then
+    file="fastlane/Fastfile"
+  elif [[ -e ".fastlane/Fastfile" ]] then
+    file=".fastlane/Fastfile"
+  fi
+
+  # parse 'beta' out of 'lane :beta do', etc
+  completions=`cat $file | grep "^\s*lane \:" | awk -F ':' '{print $2}' | awk -F ' ' '{print $1}'`
+
+  reply=( "${(ps:\n:)completions}" )
+}
+
+compctl -K _fastlane_complete fastlane