GitS2014: update Unbearable

Thanks to @blankwall in #16.
GitS2014: add Moon Boots

Thanks to @blankwall in #16.
GitS2014: add Cave of Nope

Thanks to @blankwall in #16.
GitS2014: link to simpler Radioactive solution

Closes #9.
GitS2014: add Revenge of Imgception

Closes #1.