Update list of supported python implementations in installation.rst
Update list of supported python implementations in installation.rst

QuLogic/powerline,QuLogic/powerline,dragon788/powerline,wfscheper/powerline,prvnkumar/powerline,blindFS/powerline,russellb/powerline,xxxhycl2010/powerline,seanfisk/powerline,darac/powerline,xxxhycl2010/powerline,darac/powerline,DoctorJellyface/powerline,s0undt3ch/powerline,EricSB/powerline,cyrixhero/powerline,lukw00/powerline,s0undt3ch/powerline,Luffin/powerline,kenrachynski/powerline,junix/powerline,Luffin/powerline,bartvm/powerline,bezhermoso/powerline,cyrixhero/powerline,EricSB/powerline,wfscheper/powerline,cyrixhero/powerline,kenrachynski/powerline,Luffin/powerline,IvanAli/powerline,IvanAli/powerline,EricSB/powerline,dragon788/powerline,areteix/powerline,kenrachynski/powerline,xfumihiro/powerline,seanfisk/powerline,russellb/powerline,junix/powerline,xfumihiro/powerline,bezhermoso/powerline,bartvm/powerline,S0lll0s/powerline,areteix/powerline,DoctorJellyface/powerline,prvnkumar/powerline,blindFS/powerline,bezhermoso/powerline,junix/powerline,bartvm/powerline,areteix/powerline,S0lll0s/powerline,QuLogic/powerline,blindFS/powerline,russellb/powerline,Liangjianghao/powerline,xxxhycl2010/powerline,S0lll0s/powerline,lukw00/powerline,IvanAli/powerline,wfscheper/powerline,lukw00/powerline,Liangjianghao/powerline,seanfisk/powerline,s0undt3ch/powerline,dragon788/powerline,xfumihiro/powerline,Liangjianghao/powerline,DoctorJellyface/powerline,darac/powerline,prvnkumar/powerline