This commit adds two name-spaces to beginning of the clojure koan files in order to fix an issue both #68 and #69.
I felt the example wasn't very clear as the conditional returned the quoted form of `doom` when it evaluated to true or false. This way the user needs to find a value that satisfies the if-not conditional so it returns `doom` and not `more-doom`.
Works fine either way - this is just since underscores are required in filenames for real projects, so it's something good for folks to get used to.