anchor.diff:  
               ## Configure Environment variables
   
  -            **- Create an Environment variable**
  +            **Create an Environment variable**
   
                   $ modulus env set CUSTOM_VAR_C custom_value_3
                   Setting CUSTOM_VAR_C for project ExampleProject
  
positive.code:                 
              Your project environment variable will be accessible via `process.env.CUSTOM_VAR_C`.
                  
              **- List Current Variables**
  
                  $ modulus env list
                  Project ExampleProject Environment Variables
  
negative.code:                 CUSTOM_VAR_A = custom_value
                  CUSTOM_VAR_B = custom_value_2
  
              **Delete an Environment variable**
  
                  modulus env delete CUSTOM_VAR_C            
  
              Learn more about [Environment variables](http://help.modulus.io/customer/en_us/portal/articles/1701180-using-environments-variables).
  
              ## Your MongoDB Database
                          
              You can add a MongoDB to your project with a simple command:
              
                  $ modulus addons add mongo:base
              
              This will create an ENV variable called `MONGO_URL`. You can use this with any node.js MongoDB client.
  
                  var MongoClient = require('mongodb').MongoClient;
  
  