Display links to questions.

[jericson]

Answers provided by socli come from Stack Overflow, which has an attribution policy. It's pretty typical to include a comment with a link to the SO answer when using code, so it would be good to include the answer link in the output.

This patch adds the question link in a parenthetical under the question title:

Question: How do you copy a Lua table by value?
(http://stackoverflow.com/questions/640642/how-do-you-copy-a-lua-table-by-value)
. . .

It also changes question_tittle to question_title which I assume was a typo.

(Disclosure: I work as a Community Manager for Stack Overflow.)

[gautamkrishnar]

@jericson Thanks for letting me know 😄
Hehehe Yes Good find. That was a typo...