Update README and package tags

Author: ahocevar

README.md

@@ -1,13 +1,15 @@
-# Mapbox to CSS Font
+# Mapbox/MapLibre to CSS Font
 
-Utility to convert Mapbox GL Style fontstacks or fonts names to CSS compatible font definitions.
+Utility to convert Mapbox/MapLibre GL Style fontstacks or fonts names to CSS compatible font definitions.
 
 For fontstacks, the style and weight of the primary font (first font in the fontstack) will also be used for the fallback fonts.
 
-| Mapbox Font Name          | Replacement Font Name |
+Fonts commonly found in Mapbox/MapLibre styles, which are not available as free fonts on [Fontsource](https://fontsource.org/) or [Google Fonts](https://fonts.google.fonts/), will be replaced with a close match:
+
+| Mapbox/MapLibre Font Name | Replacement Font Name |
 |---------------------------|-----------------------|
-| Klokantech Noto Sans      | Noto Sans            |
-| DIN Pro                   | Barlow               |
+| Klokantech Noto Sans      | Noto Sans             |
+| DIN Pro                   | Barlow                |
 
 ## Usage
 

package.json

@@ -11,6 +11,7 @@
   },
   "keywords": [
     "mapbox",
+    "maplibre",
     "font"
   ],
   "author": "Andreas Hocevar",