Added ::search and ::resolve methods
Adding Getter#url

This method uses the BandCamp url module to resolve a url to an id of
some kind. It then makes a second request to actually get the data for
that id.
Added Getter#band

Returns the Band object for the given id.
Merge branch 'url'

Conflicts:
	lib/bandcamp/getter.rb
	spec/getter_spec.rb