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1. Using the Heroku toolbelt you can write in the command line: 

   $ heroku plugins:install https://github.com/heroku/heroku-deploy

   2.  

2. Check if the heroku-deploy plugin is installed by typing in the command line

   $ heroku plugins

   And if everything is ok you will see: 

   === Installed Plugins

   heroku-deploy

Creating a Heroku application

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