Added CDN support

This release adds the option to use CDN for the statics, thanks to Luiz Felipe Neves.

It can be used by providing the option useCDN : true when generating the report

Contains:

• Merge pull request #111 from LuizFelipeNeves/useCDN b1b1833
• Added option to useCDN cebb5fe

v1.14.0...v1.15.0