Add links to travis-ci and stillmaintained pages
Add links to travis-ci and stillmaintained pages

I'm used to clicking travis-ci badge when I want to see the tests. :)
doctrine/orientdb-odm,doctrine/orientdb-odm,ruleant/orientdb-odm,Krienas/orientdb-php-odm,Krienas/orientdb-php-odm,orientechnologies/orientdb-php-odm,orientechnologies/orientdb-php-odm,ruleant/orientdb-odm