feature: added License

feature: added documentation to main README

GitBook: [#5] Some spelling fix

fix: some indentation and typos on the doc

fix: appropirate introduction nav

fix: appropirate introduction nav

GitBook: [#3] Initial documentations

feature: added splash screen to navifation

feature: added navigation documentation

feature: added splashscreen documentation

fix: some layout fix

fix: added ios splashscren icon constraints

fix: make some page references screen

feature: added building block documentations

feature: made building block documentation