adding Getting Started dialog
adding Getting Started menu item to inspect dropdown menu
updating content per feedback from Larz and Ryan
updating content per feedback from Larz
Merge remote-tracking branch 'origin/master' into bchin/issue-3
updating content per feedback from Larz and Ryan
serialize preferences setting to only display the Getting Started dialog once
close popup menu before displaying Getting Started dialog
display the Getting Started dialog modal-ly over the Inspect popup
Move the popover under the modal backdrop and simply click-disabling when the modal is open.
Merge pull request #14 from edge-code/bchin/issue-3

Fixed Issue #3- "Provide some Guidance About How to Use Edge Inspect"