Remove ZoomWin and fontzoom plugins.

After working on a Mac for a while, and now Chromebook Pixel (using Secure
Shell), I think it's better to use the environment's standard zoom
functionality.

Signed-off-by: Anurag Priyam <anurag08priyam@gmail.com>
Switch to jellybeans color scheme.

I have switched to using Vim in Chrome Secure Shell and jellybeans looks better
than solarized on terminals in general (without having to configure the
colorscheme of terminals as well) and gorgeous on Pixel.

Signed-off-by: Anurag Priyam <anurag08priyam@gmail.com>
Install quickfixsigns plugin.

Signed-off-by: Anurag Priyam <anurag08priyam@gmail.com>