Yet to do:  state keys, embedded integration.

Implements proper detection of the modifier state both from the OSK and the physical keyboard and also ensures that `osk.clickKey` operates as expected for existing keyboards.

Developed an initial testing framework for the chirality changes, corrected default behavior of buildDefaultLayout when KLS lacks specifications for default layers.

Refactors out the key-102 handling into one of the new helper functions, aiding the readability of osk.buildDefaultLayout.

Heavily refactors osk.buildDefaultLayout in prep for implementation of modifier chirality.  Also defines a lot of nice modifier + state-key constants.

Fixes to web set up

Fix android build script for MacOS and update README

[Web] Fixes unexpected '%' insertion in compiled UI code.

Update README files

root README
-Add iOS CI build status
-Organize according to desktop and web/mobile platforms

web/README
- Reorder content to a *Minimum Web Requirements* section

ios/README
- Add some formatting

Fix for 2 keyboards being displayed when closing Keyman browser to Keyman for Android

[Mac] Changed to use lowercase "k" when generating DMG file.

Removed stray f from first line

[Mac] Changed to use lowercase "k" when generating DMG file.

cleanup back to original code

Ios iphone 7 system keyboard width regression

Merge remote-tracking branch 'origin/ios-build-sh-enhancement' into ios-iphone-7-system-keyboard-width-regression

iOS css for embedded regression

- also removed stray include of facebookSDK