Use itself for documentation generation.

Makefile

@@ -38,9 +38,8 @@ $(BIN)/golint: | $(BASE)
 	cd $(BASE) && $(GO) get golang.org/x/lint/golint
 
 .PHONY: docs
-docs:
-	build_scripts/generate_godocs.py
-	tar czf docs.tar.gz -C godocs .
+docs: | $(BASE)
+	cd $(BASE) && bin/$(PACKAGE) -v -symlinks -exclude vendor,.gopath
 
 .PHONY: vet
 vet: | $(BASE)