Make metadata option work
Don’t generate docs when using metadata option
Make relativizing path more robust
Trust the main file path in the package.json
Be defensive about this 

@gjtorikian not sure whats going on in this case…
:lipstick: for kevin
This var is being unused
Extract the "main file finder" into a separate method

This also restores seeking main files in the source dirs and gets the
test to :green_apple: once more
Support referencing for class properties as well
Rename this method
Only parse files within valid src dirs
Merge pull request #61 from atom/bo-fix

Fix for use with --metadata option