Proper README.md
Add gsettings schema for saved state
Changes to the SavedState property names
Change application id for gsettings schema
Fix schema validation errors
Add makefile for gsettings schema
Reference data/CMakeLists.txt to install gsettings schema
Merge branch 'feature/gesttings-schema' into develop
Merge branch 'develop' of https://github.com/nlaplante/envelope into develop

Conflicts:
	README.md