added .gitattributes

GitHub recommended this file to normalize end-of line white space.
Set up new demo.

Took mobileNew3.html and got it working again. Added the Intro text div
and the map div so that it would function as a single page app.
Merge pull request #3 from mroberge/development

Development
Merge pull request #4 from mroberge/master

latest version is ready to be posted.