Update dot.snippets
Update README.md
Added cmds for neato, fdp, ...
Merge pull request #7 from bjornfor/doc-fixes

Doc fixes
Add :GraphvizInteractive command

:GraphvizInteractive opens a dot viewer that immediately redraws the
image when the source file is saved. This is done with "dot -Txlib", the
same command that the vimdot script from the graphviz package uses.

Tested on Linux (ok) and Windows (not ok; graphviz isn't built with xlib
support).
Merge pull request #8 from bjornfor/graphviz-interactive

Add :GraphvizInteractive command
Added support for UltiSnips
Added support for UltiSnips
README.md: <Leader> is actually <LocalLeader>

Fix documentation <=> code discrepancy.

[1] explains the reasoning behind using <LocalLeader> over <Leader>:

  The <Leader> prefix should be used for global mappings (applicable to
  all buffers) defined by a plugin. For buffer-local mappings, the
  <LocalLeader> prefix should be used. Vim will replace this with the
  value set in the 'maplocalleader' variable. The default value for this
  variable is backslash ('\'). The <LocalLeader> is generally used in
  mappings defined by a Vim filetype plugin.

  The 'mapleader' and 'maplocalleader' variables allow the user to choose
  different keys as starting keys for global mappings and buffer-local
  mappings defined by Vim plugins.

[1]: http://vim.wikia.com/wiki/Mapping_keys_in_Vim_-_Tutorial_%28Part_3%29