update upgrade to 1.0 guide
update upgrade to 1.0 guide

tim-mc/quill,quilljs/quill,voxmedia/quill,willrowe/quill,sferoze/quilljs,voxmedia/quill,sferoze/quilljs,sferoze/quilljs,quilljs/quill,sferoze/quilljs,willrowe/quill,willrowe/quill,voxmedia/quill,quilljs/quill,tim-mc/quill