README.md in trackler-2.2.1.46

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 The **North American Numbering Plan (NANP)** is a telephone numbering system used by many countries in North America like the United States, Canada or Bermuda. All NANP-countries share the same international country code: `1`.
 
 NANP numbers are ten-digit numbers consisting of a three-digit Numbering Plan Area code, commonly known as *area code*, followed by a seven-digit local number. The first three digits of the local number represent the *exchange code*, followed by the unique four-digit number which is the *subscriber number*.
 
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 The format is usually represented as
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 (NXX)-NXX-XXXX
 ```
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 where `N` is any digit from 2 through 9 and `X` is any digit from 0 through 9.
 
 Your task is to clean up differently formated telephone numbers by removing punctuation and the country code (1) if present.
 
 For example, the inputs