Configure search

Enable search highlighting
Enable incremental search
Toggle search highlighting with <leader>/
Added plugin

Added the NERDTree plugin from
https://github.com/scrooloose/nerdtree.git
Plugin configuration

Configuration for the NERDTree plugin.
Added colorscheme

Added the vividchalk colorscheme from
https://github.com/tpope/vim-vividchalk.git
Added config

Added sensible.vim from https://github.com/tpope/vim-sensible.git
Set indenting for vim files
Add encoding to statusline
Added plugin

Added markdown plugin from https://github.com/tpope/vim-markdown.git
Set indentation for markdown
Set colorcolumn
Edit README

Added installation instructions to the README file.