Update README

This patch updates README, converting it to markdown, adding more links
and references, and explicitly mention the Python 3 dependency.

README

@@ -1,56 +0,0 @@
-
-git-arr - A git repository browser
-----------------------------------
-
-git-arr is a git repository browser that can generate static HTML instead of
-having to run dynamically.
-
-It is smaller, with less features and a different set of tradeoffs than
-other similar software, so if you're looking for a robust and featureful git
-browser, please look at gitweb or cgit instead.
-
-However, if you want to generate static HTML at the expense of features, then
-it's probably going to be useful.
-
-It's open source under the MIT licence, please see the LICENSE file for more
-information.
-
-
-Getting started
----------------
-
-You will need Python, and the bottle.py framework (the package is usually
-called python-bottle in most distributions).
-
-If pygments is available, it will be used for syntax highlighting, otherwise
-everything will work fine, just in black and white.
-
-
-First, create a configuration file for your repositories. You can start by
-copying sample.conf, which has the list of the available options.
-
-Then, to generate the output to "/var/www/git-arr/" directory, run:
-
-  $ ./git-arr --config config.conf generate --output /var/www/git-arr/
-
-That's it!
-
-The first time you generate, depending on the size of your repositories, it
-can take some time. Subsequent runs should take less time, as it is smart
-enough to only generate what has changed.
-
-
-You can also use git-arr dynamically, although it's not its intended mode of
-use, by running:
-
-  $ ./git-arr --config config.conf serve
-
-That can be useful when making changes to the software itself.
-
-
-Contact
--------
-
-If you want to report bugs, send patches, or have any questions or comments,
-just let me know at albertito@blitiri.com.ar.
-

README.md

@@ -0,0 +1,65 @@
+
+# git-arr - A git repository browser
+
+[git-arr] is a [git] repository browser that can generate static HTML.
+
+It is smaller, with less features and a different set of tradeoffs than
+other similar software, so if you're looking for a robust and featureful git
+browser, please look at [gitweb] or [cgit] instead.
+
+However, if you want to generate static HTML at the expense of features, then
+it's probably going to be useful.
+
+It's open source under the MIT licence, please see the `LICENSE` file for more
+information.
+
+[git-arr]: https://blitiri.com.ar/p/git-arr/
+[git]: https://git-scm.com/
+[gitweb]: https://git-scm.com/docs/gitweb
+[cgit]: https://git.zx2c4.com/cgit/about/
+
+
+## Getting started
+
+You will need [Python 3], and the [bottle.py] framework (the package is usually
+called `python3-bottle` in most distributions).
+
+If [pygments] is available, it will be used for syntax highlighting, otherwise
+everything will work fine, just in black and white.
+
+
+First, create a configuration file for your repositories. You can start by
+copying `sample.conf`, which has the list of the available options.
+
+Then, to generate the output to `/var/www/git-arr/` directory, run:
+
+```sh
+./git-arr --config config.conf generate --output /var/www/git-arr/
+```
+
+That's it!
+
+The first time you generate, depending on the size of your repositories, it
+can take some time. Subsequent runs should take less time, as it is smart
+enough to only generate what has changed.
+
+You can also use git-arr dynamically, although it's not its intended mode of
+use, by running:
+
+```
+./git-arr --config config.conf serve
+```
+
+That can be useful when making changes to the software itself.
+
+
+[Python 3]: https://www.python.org/
+[bottle.py]: https://bottlepy.org/
+[pygments]: https://pygments.org/
+
+
+## Contact
+
+If you want to report bugs, send patches, or have any questions or comments,
+just let me know at albertito@blitiri.com.ar.
+