support of dataurl images
applied proposals of #267 by @diegocr
Update README.md
Merge pull request #267 from woolfg/dataurl

support of dataurl images
Minor tweaks related to #267
Fixed fromHTML bug when using strings...
New dist files with updated Blob.js and FileSaver.js
floating around image

floating advanced, clearing divs and watcher functions adapted
problem of lost lines solved
empty line between first lines on new page removed
merged