added build instructions in readme

README.md

@@ -1 +1,12 @@
 Allows someone to setup a quick poll decided by [ranked voting](https://en.wikipedia.org/wiki/Ranked_voting) (currently just [instant runoff](https://en.wikipedia.org/wiki/Instant-runoff_voting)). At the moment, there's a fully-functional backend and the beginnings of a new poll page on the frontend.
+
+To run:
+* install [Haskell](https://www.haskell.org/ghcup/)
+* install [Elm](https://guide.elm-lang.org/install/elm.html)
+``` sh
+    cd client
+    elm make src/Main.elm --output static/main.js
+    cd ../server
+    cabal run
+```
+* go to localhost:8080