3rd phase of reworking

***[CONVERTED TABS TO SPACES]***
Added `Bot` constructor,
Moved some functions to be methods of `Bot`,
Cleaned up `isRhymeInArray` slightly,
Re-ordered code blocks in `lyrpictweet.js`.
Altered `config.js` structure.

TODO:
Clean up `findRhymes`,
Make `makeYQL` generic without chartLyrics baked in,