offline docs - make download easier

[milahu]

getting offline docs should be easier

for now, i have to

git clone --branch source-3.0 --depth 1 https://github.com/svgdotjs/svgdotjs.github.io.git
# done in 5 seconds, received 1.6 MB

cd svgdotjs.github.io
npm install
# done in 3 minutes, after compiling node-sass

# dynamic docs
npm run serve -s &
xdg-open http://localhost:8030/

# static docs - configure
patch -b -p1 statify.php <<EOF
--- a/statify.php
+++ b/statify.php
@@ -21,2 +21,4 @@

+$url = '';
+
 // Don't touch below here
EOF

# static docs - build
curl http://localhost:8030/statify.php
sudo npm install -g node-static
static -p 8040 3.0/ &
xdg-open http://localhost:8040

the worst part is:
i need 100 MByte disk space, just for the node_modules folder
and the compiled/static docs only have 3 MByte, zipped only 250 KByte

i would love to see this done more efficient ....
probably just release the pre-compiled static docs

most people will just need docs for version 3.0 or 2.7
and if they need more, they can still clone + install