Update copyright date on docs, change docs version to read '2' instead of '2.1.0' - matches orm
Update copyright date on docs, change docs version to read '2' instead of '2.1.0' - matches orm

gencer/dbal,DHager/dbal,doctrine/dbal,gencer/dbal,stof/dbal,kimhemsoe/dbal,mikeSimonson/dbal,stof/dbal,AlexDpy/dbal,mRoca/dbal,drieschel/dbal,bspeterson/dbal,helicon-os/doctrine-dbal,lcobucci/dbal,Tobion/dbal,lcobucci/dbal,Tobion/dbal,deeky666/dbal,vortgo/dbal,v-bartusevicius/dbal,stchr/dbal,vutung2311/dbal,helicon-os/doctrine-dbal,mikeSimonson/dbal,kimhemsoe/dbal,deeky666/dbal,vutung2311/dbal,v-bartusevicius/dbal,BenMorel/dbal,stchr/dbal,vortgo/dbal,DHager/dbal,doctrine/dbal,AlexDpy/dbal,mRoca/dbal,bspeterson/dbal,drieschel/dbal,BenMorel/dbal