Add a way to run the rake task with a formatter
fix the deprecated formatter interface warning

"The Nc formatter uses the deprecated formatter interface not supported directly by RSpec 3.  To continue to use this formatter you must install the `rspec-legacy_formatters` gem"
Wording
Quotes
Prefer do/end for multi line blocks
Whitespace
Merge branch 'fix-deprecated-formatter-interface-warning'

* fix-deprecated-formatter-interface-warning:
  Whitespace
  Prefer do/end for multi line blocks
  Quotes
  Wording
  fix the deprecated formatter interface warning
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