Add iTerm fix solution.
Add iTerm fix solution.

Add a iTerm fix solution from https://github.com/powerline/fonts/issues/44
areteix/powerline,EricSB/powerline,blindFS/powerline,S0lll0s/powerline,QuLogic/powerline,QuLogic/powerline,prvnkumar/powerline,areteix/powerline,S0lll0s/powerline,EricSB/powerline,QuLogic/powerline,prvnkumar/powerline,kenrachynski/powerline,kenrachynski/powerline,areteix/powerline,bezhermoso/powerline,S0lll0s/powerline,prvnkumar/powerline,bezhermoso/powerline,blindFS/powerline,kenrachynski/powerline,bezhermoso/powerline,EricSB/powerline,blindFS/powerline