Added regex comment
adding midterm assignment
added comment for 404 check
changed block variable name and made block easier to read
Revert "changed block variable name and made block easier to read"

This reverts commit ef3b921497094337af14ab0af2e494ef56f513e1.
changed block variable name
initializing Concert with a hash
Changed to_s method to a show method instead to get rid of object ids, yay
adds the ability to filter search results by city
changes show method to return an array and runner file puts the array
adds tests
removes variable from show method
initial refactoring
refactoring some more, moved API calls to Artist object
adds check for 404 response, adds formatting to Concert object
removes old commented code
fixes concert test
moves require statements to artist file and fixes wording
Added midterm
uses compact! method when filtering concerts by location instead of reject!