docs (generators): Heroku generator run manually

Remove 'yo angular-fullstack:heroku' (not working)
Update docs to reflect manual setup

Fixes: angular-fullstack#1966, angular-fullstack#1950

Author: aniknafs

Diff for: docs/generators/heroku.md

@@ -1,21 +1,52 @@
 ### Heroku
 
-Deploying to heroku only takes a few steps.
+#### Setup
+In order to deploy to Heroku, first you need to take these steps: 
 
+Create a [Heroku](www.heroku.com) account.
+Install the [Heroku Toolbelt](https://devcenter.heroku.com/articles/getting-started-with-nodejs#set-up)
+
+heroku login (if you are not already authenticated).
+
+Create an app on Heroku and giving it a name (e.g. myapp):
+```
+heroku apps:create myapp
+```
+You can also use Heroku dashboard to create an app. 
+
+If you're using mongoDB you will need to add a database to your app (e.g. [mlab](https://mlab.com/) or [compose](https://www.compose.com/mongodb)): 
+Here we use mlab:
 ```
-yo angular-fullstack:heroku
+heroku addons:create mongolab
+```
+
+Now, build your app by running: 
+```
+gulp build
 ```
+This creates a folder called ###dist . 
 
-To work with your new heroku app using the command line, you will need to run any `heroku` commands from the `dist` folder.
+Now go to ###dist and set it up as a git repository:
+```
+git init 
+```
 
+Now, add Heroku as your ###dist folder's remote repository:
+```
+heroku git:remote -a myapp
+```
 
-If you're using mongoDB you will need to add a database to your app:
+Now, it is time to push your local repository(###dist) to Heroku. From your app's root run:
+```
+gulp buildcontrol:heroku
+```
 
+To view your app run:
 ```
-heroku addons:create mongolab
+heroku open
 ```
 
-Note: if you get an `Error: No valid replicaset instance servers found`  you need to modify moongose connection options in config/environment/production.js as follows:  
+Note on MongoDB setup: if you get an `Error: No valid replicaset instance servers found`  you need to modify moongose connection options in config/environment/production.js as follows:  
 ```
 options: {
   db: {
@@ -27,9 +58,6 @@ options: {
 ```
 One of the odd things about the Node driver is that the default timeout for replica set connections is only 1 second, so make sure you're setting it to something more like 30s like in this example.
 
-
-Your app should now be live. To view it run `heroku open`.
-
 >
 > If you're using any oAuth strategies, you must set environment variables for your selected oAuth. For example, if we're using **Facebook** oAuth we would do this :
 >