not using skylight.io any more
add some unit testing of LyricsWiki

also removed HTTParty due to difficulty with mocking
[fixes #4]
make lyric-fetching decision more clear

should help with [#10] but just the Artist#fetch_new_song_lyrics
side of the problem

fixed some Artist tests

song names onto ipsum page
tweak CustomString#capitalize_first_letter regex

[fixes #44] CustomString#capitalize_first_letter can lowercase