adding test cases. updated mocha.js. 1 spelling fix in common/rules.js
enable user to manually enter JS for scanning
Merge pull request #69 from mozilla/editable

enable user to manually enter JS for scanning
marked tests pending. adjusted a few tests based on chat w/ freddyb
remove extra line
Merge pull request #66 from mozilla/mocha-tests

First ScanJS test cases, some failures pending but tracked in other issues/pull requests
merging in master, fixing conflicts