Updated README.md.
Updated README.md.

Review: https://reviews.apache.org/r/13231

gsantovena/mesos,Aman-Jain-14/customizedMesos,gsantovena/mesos,yuquanshan/customizedMesos,yuquanshan/customizedMesos,Aman-Jain-14/customizedMesos,zmalik/mesos,zmalik/mesos,kaysoky/mesos,kaysoky/mesos,neilconway/mesos,Gilbert88/mesos,neilconway/mesos,chhsia0/mesos,jpeach/mesos,Gilbert88/mesos,abudnik/mesos,andschwa/mesos,zmalik/mesos,verizonlabs/mesos,verizonlabs/mesos,jpeach/mesos,neilconway/mesos,chhsia0/mesos,asamerh4/mesos,chhsia0/mesos,reneploetz/mesos,abudnik/mesos,Gilbert88/mesos,andschwa/mesos,kaysoky/mesos,gsantovena/mesos,jpeach/mesos,verizonlabs/mesos,Gilbert88/mesos,verizonlabs/mesos,dforsyth/mesos,zmalik/mesos,reneploetz/mesos,chhsia0/mesos,reneploetz/mesos,yuquanshan/customizedMesos,neilconway/mesos,reneploetz/mesos,asamerh4/mesos,reneploetz/mesos,verizonlabs/mesos,dforsyth/mesos,reneploetz/mesos,abudnik/mesos,Gilbert88/mesos,craimbert/mesos,reneploetz/mesos,asamerh4/mesos,gsantovena/mesos,andschwa/mesos,Aman-Jain-14/customizedMesos,dforsyth/mesos,abudnik/mesos,kaysoky/mesos,gsantovena/mesos,craimbert/mesos,jpeach/mesos,craimbert/mesos,yuquanshan/customizedMesos,verizonlabs/mesos,zmalik/mesos,Gilbert88/mesos,craimbert/mesos,Aman-Jain-14/customizedMesos,zmalik/mesos,andschwa/mesos,kaysoky/mesos,jpeach/mesos,dforsyth/mesos,kaysoky/mesos,asamerh4/mesos,neilconway/mesos,gsantovena/mesos,abudnik/mesos,Aman-Jain-14/customizedMesos,kaysoky/mesos,andschwa/mesos,verizonlabs/mesos,chhsia0/mesos,yuquanshan/customizedMesos,dforsyth/mesos,jpeach/mesos,abudnik/mesos,neilconway/mesos,chhsia0/mesos,andschwa/mesos,craimbert/mesos,craimbert/mesos,asamerh4/mesos,craimbert/mesos,chhsia0/mesos,abudnik/mesos,dforsyth/mesos,zmalik/mesos,Aman-Jain-14/customizedMesos,asamerh4/mesos,asamerh4/mesos,gsantovena/mesos,dforsyth/mesos,yuquanshan/customizedMesos,Gilbert88/mesos,Aman-Jain-14/customizedMesos,jpeach/mesos,yuquanshan/customizedMesos,neilconway/mesos,andschwa/mesos