Merge pull request #2243 from jrgm/inspect-localstorage

a command-line tool for looking at browserid stuff in localStorage sqlite databases on Firefox, Chrome and Safari

@jrgm - this is a pretty awesome utility!

@jrgm - This is a pretty fantastic utility!  Two suggestions I have:

* Some documentation on where to find the default profiles would be helpful

Default profile locations:
```
Firefox: ~/Library/Application\ Support/Firefox/Profiles/<profile_name>
Chrome: ~/Library/Application\ Support/Google/Chrome/Default/
Safari: ~/Library/Safari/
```