Doc - Basic README + last CI updates

.github/workflows/docs-check.yml

@@ -32,7 +32,7 @@ jobs:
 
       - name: Build documentation
         working-directory: ./docs
-        run: make clean && make html O="-W --keep-going"
+        run: make clean && make html_all O="-W --keep-going"
 
       - name: Upload built doc
         uses: actions/upload-artifact@v2

.github/workflows/docs-deploy.yml

@@ -2,8 +2,8 @@ name: Deploy Documentation
 
 on:
   push:
-#   branches:
+    branches:
-#     - master
+      - master
 
 jobs:
   deploy:

docs/README.md

@@ -0,0 +1,38 @@
+## Requirements
+
+In order to generate the documentation, it is necessary to have a Python environment with the
+following:
+```python
+pip install sphinx sphinx_rtd_theme setuptools_rust
+```
+
+It is also necessary to have the `tokenizers` library in this same environment, for Sphinx to
+generate all the API Reference and links properly.  If you want to visualize the documentation with
+some modifications made to the Python bindings, make sure you build it from source.
+
+## Building the documentation
+
+Once everything is setup, you can build the documentation automatically for all the languages
+using the following command in the `/docs` folder:
+
+```bash
+make html_all
+```
+
+If you want to build only for a specific language, you can use:
+
+```bash
+make html O="-t python"
+```
+
+(Replacing `python` by the target language among `rust`, `node`, and `python`)
+
+
+**NOTE**
+
+If you are making any structural change to the documentation, it is recommended to clean the build
+directory before rebuilding:
+
+```bash
+make clean && make html_all
+```