update readme [skip ci]
update readme [skip ci]

small changes, use svg badges
simi/mongoid,zBMNForks/mongoid,arnkorty/mongoid,estolfo/mongoid,tzar/mongoid,codedogfish/mongoid,wuboy0307/mongoid,cao7113/mongoid,karmakaze/mongoid,rpocklin/mongoid,zaithottakath/mongoid,jonhyman/mongoid,mysociety/mongoid,bjori/mongoid,codedogfish/mongoid,kayakyakr/mongoid,sideci-sample/sideci-sample-mongoid,mongodb/mongoid,sideci-sample/sideci-sample-mongoid,Zhomart/mongoid,nicolasblanco/mongoid,kay-kim/mongoid,amw/mongoid,kayakyakr/mongoid,rpocklin/mongoid,Zhomart/mongoid,bencrouse/mongoid,tzar/mongoid,Azzurrio/mongoid,sivagollapalli/mongoid,rinmu/mongoid,Sharevari-Inc/mongoid,mongodb/mongoid,jbrien/mongoid,nviennot/mongoid,narutosanjiv/mongoid,karmakaze/mongoid,joshsoftware/mongoid,Sharevari-Inc/mongoid,kay-kim/mongoid,joshsoftware/mongoid,mongoid/mongoid,simi/mongoid,herimedia/mongoid,kcdragon/mongoid,uniiverse/mongoid,bjori/mongoid,sivagollapalli/mongoid,estolfo/mongoid,mongoid/mongoid,uniiverse/mongoid,wuboy0307/mongoid,mysociety/mongoid,kcdragon/mongoid,herimedia/mongoid,zaithottakath/mongoid,glebtv/mongoid,drobune/mongoid,Azzurrio/mongoid,nviennot/mongoid,Welovroi/mongoid,Welovroi/mongoid,cao7113/mongoid,jonhyman/mongoid,rinmu/mongoid,arnkorty/mongoid,zBMNForks/mongoid,jbrien/mongoid,drobune/mongoid,glebtv/mongoid,zenjoy/mongoid,amw/mongoid,bencrouse/mongoid,mongodb/mongoid,narutosanjiv/mongoid,zenjoy/mongoid