Mac support for menu sections.
Windows support for menu sections.
Update JSDoc comment
Merge remote-tracking branch 'origin/glenn/menu-sections' into glenn/menu-sections
Better error handling on mac.
Error handling for 'before' and 'after'.
Better error handling when adding menu items on Windows.
Merge branch 'glenn/menu-sections' of https://github.com/adobe/brackets-shell into glenn/menu-sections
Simplify return logic.
Simplify return logic.
Cleanup boolean tests
Merge pull request #186 from adobe/glenn/menu-sections

Add support for "firstInSection" and "lastInSection" when adding menu items
Add another position hack to let users to insert menu with "first" postion on Mac. We adjust the position after the very first one that we can't relocate.
Merge pull request #188 from adobe/glenn/menu-sections

Add another position hack to let users to insert menu with "first" position on Mac.
Update to sprint 20
Add code to handle cut, copy and paste in popup windows.
Merge pull request #191 from adobe/rlim/edit-command-issue

Add code to handle cut, copy and paste in popup windows.
Add minimum size for Brackets window
Update mac installer readme.
Update installer/mac/README.MD