FLOE-212: Added text fallback for video
and added missing XML namespace to math elements.
Merge remote-tracking branch 'acheetham/FLOE-215' into FLOE-217

Conflicts:
	html/01-velocity.html
	html/02-types_of_forces.html
FLOE-217: Added script example.
Merge remote-tracking branch 'acheetham/FLOE-215' into FLOE-217

Conflicts:
	html/02-types_of_forces.html
NO-JIRA: Updated readme file.
NO-JIRA: Updated Readme
NO-JIRA: Added instructions to readme.
NO-JIRA: Added instructions to readme.