update should assertion
Use marked instead of github-flavored-markdown
Fix should and mocha versions; Fix tests for should > 4.0
Merge pull request #110 from llamerr/fix_complex_test_error

update should type assertion for test ".parseComments() complex"
add more tags for google closure
see https://developers.google.com/closure/compiler/docs/js-for-compiler
multiline tags such as @example
Wrap example tag contents with markdown
alias running tests to npm test
raw option for parseTag