Add README and license

Include a description and screenshot as part of the README. The
`example.todo` file was used as a base for the screenshot.

Add a license file for the GNU GPLv3.

1 files changed, 26 insertions, 0 deletions

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+vim-twodo
+=========
+
+To-do list plugin for Vim. Provides syntax highlighting and mappings to help
+manage my personal to-do lists. To-do files use a `.todo` extension.
+
+
+## Screenshot
+![screenshot](./screenshot.png)
+
+
+## Syntax
+Certain line prefixes define different to-do types. These types will be coloured
+differently by the plugin's syntax highlighter.
+
+	- Regular priority to-dos are prefixed with a `- `
+	_ A low priority to-do
+	! A high priority to-do
+	x A deleted to-do
+	S A partially completed to-do
+	v A completed to-do
+
+
+## License
+Copyright © 2016 Teddy Wing. Licensed under the GNU GPLv3+ (see the included
+COPYING file).