Adding files and README badges for travis and scrutinizer

@chillu Do you think this good default scrutinizer config? Do you have any thoughts of what would be a good silverstripe default config? 
others that I found: 

 * https://github.com/burnbright/silverstripe-shop/blob/master/.scrutinizer.yml
 * https://github.com/sunnysideup/silverstripe-ecommerce/blob/master/.scrutinizer.yml