Make code prettier, fix spelling errors

Adds a space before /usr/bin/env in the shebang because it can be put there and it is pretty.
Fixes spelling of env.
Adds some newlines for prettiness.
Removes a redundant comment (was mentioned twice).
Move comment to keep line length nice.
Replace single quotes with double quotes to maintain consistency
Switch to module, rename get
Add qotd as alias of quote_of_the_day
Add author method
Allow functions within module to be run
Add quote method

This method uses a regular expression that removes characters up to the first A-Z, a-z, or 0-9.  I hope that no quotes would begin with a character outside of this range.  Hmm.  This had to be used because WikiQuote contained the character ￼ in the place before the quote (got parsed into the string), and this I feel is safer than adding special handling for just that character.  Though, maybe that is better?  Hmm.
Add tests for quote and author
Fix up executable
Better way to print author in executable
Add quote documentation
Merge pull request #1 from Sammidysam/master

Turn class WikiQuote into module, add quote and author method, change executable display