API Basejump: Timestamp microservice

User stories:

1) I can pass a string as a parameter, and it will check to see whether that string contains either a unix timestamp or a natural language date (example: January 1, 2016)

2) If it does, it returns both the Unix timestamp and the natural language form of that date.

3) If it does not contain a date or Unix timestamp, it returns null for those properties.

Example usage:

https://fcc-projects-kornil.c9users.io/December%2015,%202015
https://fcc-projects-kornil.c9users.io/1450137600

Example output:

{ "unix": 1450137600, "natural": "December 15, 2015" }