Add logo images to repository

This closes #29.

For the time being not many changes are introduced in the docs, just the
logos being uploaded.

In the near feature, when #17 and #18 are addressed, we might do a
better use of it.

README.rst

@@ -17,9 +17,16 @@
     :alt: Monthly Downloads
     :target: https://pepy.tech/project/configupdater
 
-=============
-ConfigUpdater
-=============
+|
+
+.. image:: https://configupdater.readthedocs.io/en/latest/_latest/banner-640x323.png
+    :height: 640px
+    :width: 323px
+    :scale: 60 %
+    :alt: Config Updater
+    :align: center
+
+|
 
 The sole purpose of `ConfigUpdater`_ is to easily update an INI config file
 with no changes to the original file except the intended ones. This means

docs/conf.py

@@ -181,12 +181,12 @@
 
 # The name of an image file (relative to this directory) to place at the top
 # of the sidebar.
-# html_logo = ""
+# html_logo = "gfx/configupdater-254x128.png"
 
 # The name of an image file (within the static path) to use as favicon of the
 # docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
 # pixels large.
-# html_favicon = None
+html_favicon = "gfx/favicon.ico"
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,

docs/gfx/README.md

@@ -0,0 +1,19 @@
+The logo design uses the Monoid typeface a open source webfont that was
+developed by Andreas Larsen and contributors in 2015 under the MIT or SIL
+licenses.
+More information at https://github.com/larsenwork/monoid
+
+The colors include pure black (`#000000`), pure white (`#FFFFFF`), 30% gray for the
+box shadow (`#B3B3B3`) and an accent color (`#008C70`) that can be understood as a
+tone of "teal"
+
+A vector representation of the design can be found in the files:
+
+- `configupdater.svg`: produced with [Inkscape](https://inkscape.org/), might
+    contain specific markup not understood by other software. This file
+    should be preferred when using Inkscape.
+- `configupdater_plain.svg`: a "plain" version of the same file that in theory
+    should not contain inkscape-specific markup. This file might be preferred
+    when using other editors.
+- `icon.svg`: another Inkscape file that only contains, this time without the
+    "ConfigUpdater" name, just the icon image.