Revert to previous way of sourcing vim plugin
Revert to previous way of sourcing vim plugin

Refs #95.

keelerm84/powerline,areteix/powerline,QuLogic/powerline,dragon788/powerline,wfscheper/powerline,seanfisk/powerline,Liangjianghao/powerline,magus424/powerline,junix/powerline,xxxhycl2010/powerline,S0lll0s/powerline,s0undt3ch/powerline,bezhermoso/powerline,firebitsbr/powerline,prvnkumar/powerline,kenrachynski/powerline,Luffin/powerline,DoctorJellyface/powerline,S0lll0s/powerline,darac/powerline,junix/powerline,blindFS/powerline,Liangjianghao/powerline,prvnkumar/powerline,blindFS/powerline,firebitsbr/powerline,Luffin/powerline,magus424/powerline,keelerm84/powerline,firebitsbr/powerline,EricSB/powerline,darac/powerline,wfscheper/powerline,EricSB/powerline,EricSB/powerline,xxxhycl2010/powerline,DoctorJellyface/powerline,cyrixhero/powerline,bartvm/powerline,areteix/powerline,IvanAli/powerline,russellb/powerline,magus424/powerline,dragon788/powerline,blindFS/powerline,S0lll0s/powerline,seanfisk/powerline,darac/powerline,cyrixhero/powerline,bezhermoso/powerline,s0undt3ch/powerline,QuLogic/powerline,bezhermoso/powerline,s0undt3ch/powerline,QuLogic/powerline,wfscheper/powerline,cyrixhero/powerline,lukw00/powerline,bartvm/powerline,DoctorJellyface/powerline,areteix/powerline,kenrachynski/powerline,Luffin/powerline,prvnkumar/powerline,dragon788/powerline,xfumihiro/powerline,seanfisk/powerline,bartvm/powerline,junix/powerline,IvanAli/powerline,lukw00/powerline,xfumihiro/powerline,xfumihiro/powerline,kenrachynski/powerline,lukw00/powerline,Liangjianghao/powerline,russellb/powerline,russellb/powerline,xxxhycl2010/powerline,IvanAli/powerline