I\'m trying to use Powerline plugin (https://github.com/Lokaltog/vim-powerline) for the first time.
Plugin seems to be installed. I use vundle with the following command
adding this to the vimrc file fixed it for me:
set guifont=Source\ Code\ Pro\ for\ Powerline "make sure to escape the spaces in the name properly
Source: https://github.com/bling/vim-airline/issues/142