docs: Add READMEs for wal, term, and editorconfig

Also, after some testing, it turns out that my previous assumption about
systemd was wrong. Placing a service in default.target.wants directly
will cause the service to instead not be recognized by systemd.

editorconfig/README.md

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+# editorconfig
+
+These are the settings I use for editing files. Spaces or tabs do not matter, since the environment you use should make both behave very similarly if not exactly the same.
+
+## Dependencies
+
+None.
+
+## Installation
+
+```sh
+make package=ediiorconfig
+```
+
+## Usage
+
+If you use my [`.vimrc`](/vim) or [code](/code) config, editorconfig will aleady be applied. Otherwise you should read the [editorconfig][editorconfig] website for how to enable it in your editor.
+
+[editorconfig]: https://editorconfig.org/

term/README.md

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+# Term
+
+Here you will find the dotfiles I use specifically for the terminal emulators `termite` and `urxvt`.
+
+## Dependencies
+
+- [termite][termite] - Terminal with true transparency, icon fonts, true color, and emoji support
+- [rxvt-unicode-patched][rxvt-unicode-patched] - Terminal with image support
+
+## Installation
+
+```sh
+make package=term
+```
+
+## Usage
+
+If you haven't already, `xrdb -merge ~/.Xresources`. Note that `.Xresources` should be loaded with one of your init scripts.
+
+[termite]: https://www.archlinux.org/packages/community/x86_64/termite/
+[rxvt-unicode-patched]: https://aur.archlinux.org/packages/rxvt-unicode-patched/

wal/README.md

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+# wal
+
+I use `wal` to change color schemes on demand.
+
+## Dependencies
+
+- [python-pywal][python-pywal] - A universal color scheme changer
+
+## Installation
+
+```sh
+make package=wal
+```
+
+## Usage
+
+When you use `wal` to change the color scheme, add `-o ~/.config/wal/done.sh` to run the done script.
+
+[python-pywal]: https://www.archlinux.org/packages/community/any/python-pywal/