docs(readme): add heroku gulp warning

Awk34 · Awk34 · commit ac4a990a1485 · 2016-05-11T12:46:14.000-04:00
diff --git a/readme.md b/readme.md
@@ -335,6 +335,8 @@ Your app should now be live. To view it run `heroku open`.
 >     heroku config:set DOMAIN=<your-custom-domain>
 >
 
+> WARNING: Deployment is untested with Gulp
+
 To make your deployment process easier consider using [grunt-build-control](https://github.com/robwierzbowski/grunt-build-control).
 
 #### Pushing Updates

Original file line number	Diff line number	Diff line change
@@ -335,6 +335,8 @@ Your app should now be live. To view it run `heroku open`.
`335`	`335`	`> heroku config:set DOMAIN=<your-custom-domain>`
`336`	`336`	`>`
`337`	`337`
	`338`	`+> WARNING: Deployment is untested with Gulp`
	`339`	`+`
`338`	`340`	`To make your deployment process easier consider using [grunt-build-control](https://github.com/robwierzbowski/grunt-build-control).`
`339`	`341`
`340`	`342`	`#### Pushing Updates`