the tests require docs to be made already

Otherwise the `make test` command fails to find ronn when generating the
docs for the first time in the prepublish step.

Probably there's a better way to do this, since tarball generation
requires a dev dep to be installed.  But this works on Unix at least,
and gets it by for now.

Makefile

@@ -71,7 +71,7 @@ link: uninstall
 	node cli.js link -f
 
 clean: ronnclean doc-clean uninstall
-	rm npmrc
+	rm -rf npmrc
 	node cli.js cache clean
 
 uninstall:
@@ -160,7 +160,7 @@ doc: man
 
 man: $(cli_docs) $(api_docs)
 
-test:
+test: doc
 	node cli.js test
 
 publish: link doc