Step 3. Create a new Heroku app
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Click the plus sign on upper-right corner, and you'll find the <Create new app> button in its drop down list. Click it to start adding a new app.
In the <App Name> field, assign a name for your app. Only lowercase and dash characters are allowed. The name will be available if no one else is using this name, and you'll see a green check icon on right-hand side. Click <Create App> to finish the form.
If everything is OK, you'll be brought to your new app's dashboard page like below image. You can see your app name is shown on top.
Next, we will go to config this new project in order to enable Parse.
Step 4. Config your Heroku app
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There are two things we have to config: The 1st thing is to install the MongoLab add-on. The 2nd thing is to set config variables for Parse.
Go to Resource tab, search MongoLab in search box. When it appears in the list, click its icon to install.
Choose <Sandbox - free> plan from drop down list, and click <Provision> button.
Now the MongoLab add-on is installed. Next we will setup config variables. Switch to Setting tab and click <Reveal Config Vars> button in center.
Add four new keys in the list: <APP_ID>, <MASTER_KEY>, <JAVASCRIPT_KEY>, <FILE_KEY>. All names need to be typed in uppercase letters. You can assign these key values with random strings freely. If you don't have any idea how to generate random strings, you can use Random.org service.
random.org/strings
OK! Now here comes the final step, we will install Parse server codes in this App.