Add README file

Author: hdima

README.rst

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+Python syntax highlighting script for Vim
+=========================================
+
+.. contents::
+
+About
+-----
+
+Enhanced version of the original Python syntax highlighting script. Based on
+``python.vim`` from Vim 6.1 distribution by Neil Schemenauer (nas at python dot
+ca). Check also `python.vim page on vim.org
+<http://www.vim.org/scripts/script.php?script_id=790>`_.
+
+Please use the following channels for reporting bugs, offering suggestions or
+feedback:
+
+- python.vim issue tracker: https://github.com/hdima/python-syntax/issues
+- Email: Dmitry Vasiliev (dima at hlabs.org)
+- Send a message or follow me for updates on Twitter: `@hdima
+  <https://twitter.com/hdima>`__
+
+Features
+--------
+
+Changes from the original ``python.vim`` are:
+
+- Added support for Python 3 syntax highlighting
+- Added ``:Python2Syntax`` and ``:Python3Syntax`` commands which allow to
+  switch between Python 2 and Python 3 syntaxes respectively without
+  reloads/restarts
+- Updated strings highlighting
+- Enhanced special symbols highlighting inside strings
+- Enhanced highlighting of numeric constants
+- Added optional highlighting for %-formatting inside strings
+- Added highlighting for magic comments: source code encoding and #!
+  (executable) strings
+- Added highlighting for new exceptions and builtins
+- Added highlighting for doctests
+- Added highlighting for new ``@decorator`` syntax introduced in Python 2.4a2
+- Added highlighting for the following errors:
+
+  - invalid symbols in source file
+  - mixing spaces and tabs
+  - invalid numeric constants
+  - invalid %-formatting inside strings
+  - invalid variable names
+  - trailing spaces (triggered by the ``python_highlight_space_errors`` option)
+
+Some of these features was later backported into the original ``python.vim``.
+
+How to install
+--------------
+
+The easiest installation method is to place `syntax/python.vim
+<https://github.com/hdima/python-syntax/blob/master/syntax/python.vim>`_ script
+into your ``~/.vim/syntax/`` directory.
+
+You can also use `Pathogen <https://github.com/tpope/vim-pathogen>`_ or `Vundle
+<https://github.com/gmarik/vundle>`_ plugin managers in which case you can
+install the whole `python.vim repository
+<https://github.com/hdima/python-syntax>`_ into the corresponding plugins
+directory.
+
+Script options
+--------------
+
+There are two commands to enable or disable an option:
+
+``:let OPTION_NAME = 1``
+  Enable option
+``:let OPTION_NAME = 0``
+  Disable option
+
+For example to enable all syntax highlighting features you can place the
+following command in your ``~/.vimrc`` script::
+
+  let python_highlight_all = 1
+
+Option and commands to select Python version
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+``python_version_2``
+  Enable highlighting for Python 2 (Python 3 highlighting is enabled by
+  default). Can also be set as a local to buffer ``b:python_version_2``
+  variable.
+
+The following local to buffer commands can be used to switch between two
+highlighting modes:
+
+``:Python2Syntax``
+  Switch to Python 2 highlighting mode
+``:Python3Syntax``
+  Switch to Python 3 highlighting mode
+
+Options used by the script
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+``python_highlight_builtins``
+  Highlight builtin functions and objects
+``python_highlight_builtin_objs``
+  Highlight builtin objects only
+``python_highlight_builtin_funcs``
+  Highlight builtin functions only
+``python_highlight_exceptions``
+  Highlight standard exceptions
+``python_highlight_string_formatting``
+  Highlight ``%`` string formatting
+``python_highlight_string_format``
+  Highlight syntax of ``str.format`` syntax
+``python_highlight_string_templates``
+  Highlight syntax of ``string.Template``
+``python_highlight_indent_errors``
+  Highlight indentation errors
+``python_highlight_space_errors``
+  Highlight trailing spaces
+``python_highlight_doctests``
+  Highlight doc-tests
+``python_print_as_function``
+  Highlight ``print`` statement as function for Python 2
+``python_highlight_all``
+  Enable all the options above. *NOTE: This option don't override any
+  previously set options*
+``python_slow_sync``
+  Can be set to 0 for slow machines
+
+Contributors
+------------
+
+- Jeroen Ruigrok van der Werven
+- Pedro Algarvio
+- John Eikenberry
+- Caleb Adamantine
+- Andrea Riciputi
+- Anton Butanaev
+- Marc Weber