really fix readme

@rlidwka: learn to use preview

Author: rlidwka

README.md

@@ -18,22 +18,24 @@ You'll probably need to resolve merge conflicts after you do `git pull`.
 ```
 
 2\. change `config.yaml`
+
 3\. change `.gitignore`, unignore autogenerated files, see comments there
+
 4\. make it:
 
-```
+```sh
 ~/your-org.github.io$ make
 ```
 
 5\. test it:
 
-```
+```sh
 ~/your-org.github.io$ firefox index.html
 ```
 
 6\. add autogenerated files so they will appear on github pages:
 
-```
+```sh
 ~/your-org.github.io$ git add src/db.json index.html
 ~/your-org.github.io$ git commit src/db.json index.html -m 'rebuild'
 ```