initial commit of the grid.md
Updated description for local grid config

Added a link to all grid properties description and updated description.
Update to the json config file

Updated the config file to make it clear about what to update.
cleanup

lined up the config file and removed blank lines.
Merge pull request #656 from snevesbarros/master

Local Grid setup documentation
Updating Windows Instructions
Implementing setLocation for iOS
Merge pull request #652 from penguinho/master

Implementing setLocation for iOS
Use === 1 for isVisible check

Fix #653
Merge pull request #657 from bootstraponline/===

Use === 1 for isVisible check