Refactor to use better cli command framework (#177)

* starting to refactor commands

* work

* not sure

* all commands working!

* actually add file

* work in delay flag again

* start to refactor out console printing

* i hate line endings

* simple travis test to find direct output

* remove all direct printing from push/preview

* checkin vendor

* don't need this yet

* forgot to commit these

* make version explicit command

* some code review

* Add "check" subcommand.

* move stuff to commands package

* fix

* comment out check for printlns. for now

* alphabet hax

* activedir flags gone. use creds instead

* active dir doc update

* remove bind specific flags. creds instead

* default to zones dir

* fix linux build

* fix test

* cleanup random global* vars

* Clean up PowerShell docs

* rename dump-ir to print-ir. combine with print-js

vendor/github.com/urfave/cli/cli.go

@@ -0,0 +1,22 @@
+// Package cli provides a minimal framework for creating and organizing command line
+// Go applications. cli is designed to be easy to understand and write, the most simple
+// cli application can be written as follows:
+//   func main() {
+//     cli.NewApp().Run(os.Args)
+//   }
+//
+// Of course this application does not do much, so let's make this an actual application:
+//   func main() {
+//     app := cli.NewApp()
+//     app.Name = "greet"
+//     app.Usage = "say a greeting"
+//     app.Action = func(c *cli.Context) error {
+//       println("Greetings")
+//       return nil
+//     }
+//
+//     app.Run(os.Args)
+//   }
+package cli
+
+//go:generate python ./generate-flag-types cli -i flag-types.json -o flag_generated.go