v1.1 +spaceDefaultToTab (4 to arbitrary), Moved into Edit menu, impoved Readme

 Moved menu into Edit, where it resides in many other editors.

+ spaceDefaultToTab, so the script's DEFAULT_TAB_WIDTH (4) is used to find spaced indents.  Needed since currently, my configured Tab Size is 2, which spaceToTab translates twice as many tabs needed to indent.

Perhaps not the best solution.  TODO: somehow input the expected widths, since the source & desired destinations my be different.  Perhaps reading Brackets' "Tab Size" & "Spaces" values will help (since they have separate settings now), some my want to translate from 4 spaces into 2 spaces.

But this works for me now.
cheers