Add FAQ section about skill name/ID (#25)

Add clarifying note about skill installation specs

docs/overview/faq.md

@@ -35,4 +35,32 @@ If that doesn't work, ask Neon to "check for updates" and run the update again.
 ### How can I restore Neon to a default state
 Neon can be restored by going to `Settings` -> `Factory Settings` and selecting
 `Factory Reset`. This will remove any configuration changes and restore Neon to
-the version that was originally shipped.
+the version that was originally shipped.
+
+### What is a Skill ID vs a Package Name vs a Class Name
+Skills can be identified differently in different contexts. The definitions here
+will use the [About Skill](https://github.com/NeonGeckoCom/skill-about) as an
+example.
+
+#### Skill ID
+A skill ID is used to identify a globally unique skill, and generally follows the
+format of `<skill_name>.<skill_author>`. For most skills, this is specified
+[in setup.py](https://github.com/NeonGeckoCom/skill-about/blob/d0796bbbdf37cb53dfe583e701048331f5e9731e/setup.py#L35).
+For older skills without a `setup.py` the skill ID is specified as the directory
+containing the skill's `__init__.py`; tools like `msm` and `osm` install skills
+to directories matching the usual format, using information from a git URL or
+[skill.json](https://github.com/NeonGeckoCom/skill-about/blob/dev/skill.json#L48-L49).
+
+#### Package name
+A skill package may be created with an arbitrary package name 
+[in setup.py](https://github.com/NeonGeckoCom/skill-about/blob/d0796bbbdf37cb53dfe583e701048331f5e9731e/setup.py#L87).
+This identifier is used for installing the skill or listing it as a dependency like other
+Python packages. If the skill is uploaded to PyPI, then it may be installed by package
+name using pip (i.e. `pip install neon-skill-about`). Older skills that are not packaged
+will not have a package name.
+
+#### Skill Class
+A [skill class](https://github.com/NeonGeckoCom/skill-about/blob/d0796bbbdf37cb53dfe583e701048331f5e9731e/__init__.py#L45)
+generally has a descriptive name and is capitalized according to [Python standards](https://peps.python.org/pep-0008/#class-names).
+This class is referenced in the [setup.py entrypoint](https://github.com/NeonGeckoCom/skill-about/blob/d0796bbbdf37cb53dfe583e701048331f5e9731e/setup.py#L35)
+but is otherwise not referenced directly.

docs/quick_reference/installing_skills.md

@@ -22,6 +22,10 @@ skills:
     - git+https://github.com/NeonGeckoCom/skill-translation
     - neon-skill-translation~=1.0 
 ```
+> Note that the skills here are [Python packages](https://packaging.python.org/en/latest/).
+> This is the same kind of string you would pass to 
+> [`pip install`](https://pip.pypa.io/en/stable/cli/pip_install/), including any (optional)
+> version specs.
 
 ## Installing Skills from GitHub
 > OSM installation is documented here, but not recommended. Skills should be