update README - explain what Lit is and how to use it
update README - explain what Lit is and how to use it

deskrock/lit,chrise86/lit,prograils/lit,prograils/lit,chrise86/lit,mlitwiniuk/lit,deskrock/lit,prograils/lit,chrise86/lit,mlitwiniuk/lit,mlitwiniuk/lit