Demo cleanup

Remove unneeded jquery in basic sample
Add meta charset for web servers not up porting utf8 headers (python’s
SimpleHTTPServer)
Externalize CSS
Switch to CDNJS for all external resources
Remove http protocol hardcoding
Add stroke number display support
Revise pull request stroke-number-display
Bump version number to 0.2.0
Fix bug with stroke animation disabled
(re)enable stroke animation by default
Add view box options
Quick fix to support space character #5