Which would be, go to where project is hosted, find out what version you're looking for, click until you find actual source, copy text or download file, move file from downloads to your repo, or paste in to a new file in your repo.
TMPDIR=$(BASEDIR)/tmp
THEME=$(BASEDIR)/theme
THEME_CSS=$(THEME)/css
THEME_FONT=$(THEME)/fonts
THEME_JS=$(THEME)/js
VER_BOOTSTRAP=3.3.6
VER_FONTAWESOME=4.5.0
VER_JQUERY=2.2.1
updatedeps: $(TMPDIR) bootstrap fontawesome jquery
bootstrap:
curl -L -o $(TMPDIR)/bs.zip https://github.com/twbs/bootstrap/releases/download/v$(VER_BOOTSTRAP)/bootstrap-$(VER_BOOTSTRAP)-dist.zip
unzip -j $(TMPDIR)/bs.zip bootstrap-*/js/bootstrap.min.js -d $(THEME_JS)
unzip -j $(TMPDIR)/bs.zip bootstrap-*/css/bootstrap.min.css -d $(THEME_CSS)
fontawesome:
curl -L -o $(TMPDIR)/fa.zip https://fortawesome.github.io/Font-Awesome/assets/font-awesome-$(VER_FONTAWESOME).zip
unzip -j $(TMPDIR)/fa.zip font-awesome-*/css/*.min.css -d $(THEME_CSS)
unzip -j $(TMPDIR)/fa.zip font-awesome-*/fonts/*webfont* -d $(THEME_FONT)
jquery:
curl -L -o $(THEME_JS)/jquery.min.js http://code.jquery.com/jquery-$(VER_JQUERY).min.js <Makefile sed -E 's/.*:$//; s/\(|\)//g; s/^updatedeps:.*/mkdir -p $TMPDIR/' > update-deps.sh
BASEDIR=$PWD sh ./update-deps.sh