Fixes JSDoc compatibility with clojurescript-1934

The closure compiler used by clojurescript-1934 ignores the @constructor annotation on Unify and Ignore due to the ';' character that coffeescript inserts after a block comment generated with ``. This patch uses ### comments instead to generate closure-compatible JSDoc annotations.
Merge pull request #21 from sfnelson/coffeescript-jsdoc-compat

Fixes JSDoc compatibility with clojurescript-1934