Update raphael.free_transform.js

fix boundaries to account for viewbox scaling
Update raphael.free_transform.js

account for viewBoxScale when adjusting handles
Update raphael.free_transform.js

I goofed.
Update raphael.free_transform.js

unrefined fix for handle positioning on init
Update raphael.free_transform.js

added in viewBoxRatio variable for readability
Update raphael.free_transform.js
Merge pull request #108 from dabedur/master

Update raphael.free_transform.js' boundary to account for viewBox scaling