README.md Rewrite
README.md Rewrite

Rewrote parts of the README to be more clear, and fixed some grammatical mistakes. No source code has been changed.
NimbleNotes/html5tooltipsjs,peiche/html5tooltipsjs,daviferreira/html5tooltipsjs,peiche/html5tooltipsjs,fsanchezro/html5tooltipsjs,ytiurin/html5tooltipsjs,ytiurin/html5tooltipsjs,NimbleNotes/html5tooltipsjs,daviferreira/html5tooltipsjs,fsanchezro/html5tooltipsjs