README.md: Replace 'product_code' with 'productCode'
README.md: Replace 'product_code' with 'productCode'

Change made with:

  $ sed -i 's/product_code/productCode/g' *

Because JavaScript style conventions seem to prefer camelCase [1].

[1]: http://jscs.info/rule/requireCamelCaseOrUpperCaseIdentifiers

azurestandard/azure-angular-providers,azurestandard/azure-angular-providers