Merge pull request #134 from cirosantilli/readme-uniform-codeblocks

Use a single code block style on README.

diff --combined README.md
index 9583a4385b1e4ada0e140c26f6e3e3d239f303d6,93b0d98607cb0a1a7cef33c1988b4cc7198de575..419c26d8c285089844cbaff053fc514f21a46ec8
--- 1/README.md
--- 2/README.md
+++ b/README.md
@@@ -8,50 -8,54 +8,60 @@@ Syntax highlighting, matching rules an
  
  If you use [Vundle](https://github.com/gmarik/vundle), add the following line to your `~/.vimrc`:
  
-     Plugin 'godlygeek/tabular'
-     Plugin 'plasticboy/vim-markdown'
+ ```vim
+ Plugin 'godlygeek/tabular'
+ Plugin 'plasticboy/vim-markdown'
+ ```
  
- The `tabular` plugin come *before* `vim-markdown`.
+ The `tabular` plugin must come *before* `vim-markdown`.
  
  Then run inside Vim:
  
-     :so ~/.vimrc
-     :PluginInstall
+ ```vim
+ :so ~/.vimrc
+ :PluginInstall
+ ```
  
  If you use [Pathogen](https://github.com/tpope/vim-pathogen), do this:
  
-     $ cd ~/.vim/bundle
-     $ git clone https://github.com/plasticboy/vim-markdown.git
+ ```sh
+ cd ~/.vim/bundle
+ git clone https://github.com/plasticboy/vim-markdown.git
+ ```
  
  To install without Pathogen using the Debian [vim-addon-manager](http://packages.qa.debian.org/v/vim-addon-manager.html), do this:
  
-     $ git clone https://github.com/plasticboy/vim-markdown.git
-     $ cd vim-markdown
-     $ sudo make install
-     $ vim-addon-manager install mkd
+ ```sh
+ git clone https://github.com/plasticboy/vim-markdown.git
+ cd vim-markdown
+ sudo make install
+ vim-addon-manager install mkd
+ ```
  
  If you are not using any package manager, download the [tarball](https://github.com/plasticboy/vim-markdown/archive/master.tar.gz) and do this:
  
-     $ cd ~/.vim
-     $ tar --strip=1 -zxf vim-markdown-master.tar.gz
+ ```sh
+ cd ~/.vim
+ tar --strip=1 -zxf vim-markdown-master.tar.gz
+ ```
  
  ## Options
  
 -**Disable Folding**
 +### Disable Folding
  
 -Add the following line to your `.vimrc` to disable folding.
 +Add the following line to your `.vimrc` to disable folding configuration.
  
  ```vim
  let g:vim_markdown_folding_disabled=1
  ```
  
 -**Set Initial Foldlevel**
 +This option only controls vim_markdown's folding configuration. To enable/disable folding use Vim's folding configuration.
 +
 +```vim
 +set [no]foldenable
 +```
 +
 +### Set Initial Foldlevel
  
  Add the following line to your `.vimrc` to set the initial foldlevel. This option defaults to 0 (i.e. all folds are closed) and is ignored if folding is disabled.
  
@@@ -59,7 -63,7 +69,7 @@@
  let g:vim_markdown_initial_foldlevel=1
  ```
  
 -**Disable Default Key Mappings**
 +### Disable Default Key Mappings
  
  Add the following line to your `.vimrc` to disable default key mappings. You can map them by yourself with `<Plug>` mappings.
  
@@@ -67,26 -71,15 +77,26 @@@
  let g:vim_markdown_no_default_key_mappings=1
  ```
  
 -**Syntax extensions**
 +### Syntax extensions
 +
 +The following options control which syntax extensions will be turned on. They are off by default.
  
 -The following options control which syntax extensions will be turned on.
 +#### LaTeX math
  
 -LaTeX math: `$ $`, `$$ $$`, escapable as `\$ \$` and `\$\$ \$\$`:
 +Used as `$x^2$`, `$$x^2$$`, escapable as `\$x\$` and `\$\$x\$\$`.
  
  ```vim
  let g:vim_markdown_math=1
  ```
 +
 +#### YAML frontmatter
 +
 +Highlight YAML frontmatter as used by Jekyll:
 +
 +```vim
 +let g:vim_markdown_frontmatter=1
 +```
 +
  ## Mappings
  
  The following work on normal and visual modes: