midterm submission

Query jambase api and report back on the next matching show.  Example:

bmath@xojito$ ./jamcli.rb
use directives to specify zip code and
artist id.  Type run to execute query.


e.g. > artist 1977 zip 10010
     > run

[]> artist 1977 zip 10010
["artist", "1977", "zip", "10010"]! run
{"artist"=>"1977", "zip"=>"10010"}
No shows found.
[]? quit

Nice string interpolation.  For a project like this, its no big deal to have you apikey in an open source project on the internet... however, for future apps, there are ways to keep the api key out of your source code using environment variables. Heres a good article that review that http://railsapps.github.io/rails-environment-variables.html