Update README.md

Solved issue #426 
Changed flavors of pure data to Purr Data's relationship to Pure Data
and relocated it below goals.
10 jobs for revisereadme
Status Name Job ID Coverage
  Test
canceled debian_stable_amd64_deb #8361
debian stable amd64

canceled debian_stable_arm_deb #8369
debian arm stable

canceled debian_stable_i386_deb #8360
debian stable i386

canceled debian_stretch_amd64_deb #8362
debian stretch amd64

canceled osx_10.8_amd64_dmg #8367
osx v10.8 dmg

canceled osx_amd64_dmg #8366
osx v10.11 dmg

canceled ubuntu_14.04_amd64_deb #8364
ubuntu v14.04 amd64

canceled ubuntu_14.04_i386_deb #8363
ubuntu v14.04 i386

canceled ubuntu_16.04_amd64_deb #8365
ubuntu v16.04 amd64

canceled windows_i386_installer #8368
windows i386