[CB-3779] added missing upgrade guides from 2.6 to edge, added 2.6 to 2.7 to 2.7, was in edge
CB-3787: Documenting the fact that we use Intents.  Also, it's spelt QUIRK.
[CB-3811 CB-3815] Add overview guide and compatibility table.
[CB-3816] Add first draft of the Cordova-CLI guide.
[CB-3752] Upgrade Guide is missing instruction to add 2 frameworks
[CB-3753] Upgrade Guide is missing instructions to update Build Settings
[CB-3923] 2.8.0 to 2.9.0 upgrade guide, fixed version string in previous upgrade guide
[CB-3752][CB-3753] (2.8.0 Folder) iOS Upgrade Guide is missing instructions for 2.7.0 -> 2.8.0 upgrade
CB-3906: Yay! That was easy!
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/cordova-docs
Version 2.9.0rc1
[CB-3905] Update Getting Started home page to focus on CLI.

- fill out getting started splash screen
- update splash screen to focus on CLI prereq, omit archaic CL utils
[CB-3926] Update references from x.y.z to x.x.x.

- convert hard-coded versions to x.x.x
- rewrite to suit
[CB-3816] Fix paths to screenshots in CLI guide.
[CB-3849] Expose new CLI guide on the homepage.
[CB-3223] Remove refs to 4 unsupported platforms.

These are no longer shipped with the latest Cordova release:

    - symbian
    - webos
    - tizen
    - bada
[CB-3223] Remove all tizen-related content.
[CB-3223] Remove all symbian-related content.
[CB-3223] Remove all WebOS-related content.
[CB-3223] Remove all Bada-related content.