Adds setup instructions to the README.

README.md

@@ -1,2 +1,19 @@
 # ringo
-Tool to transform OLTP database schemas to OLAP database schemas automatically
+ A tool to transform Postgres OLTP database schemas to OLAP database schemas automatically.
+ 
+## Setup instructions
+- Install stack from http://haskellstack.org.
+- Git clone this repository:
+
+  ```sh
+  > git clone https://github.com/quintype/ringo
+  ```
+- Run the following commands in the terminal:
+
+  ```sh
+  > cd ringo
+  > stack setup
+  > stack install
+  ```
+- Add `~/.local/bin/` to your shell's PATH.
+- You should be able to run the command `ringo` on terminal now. Run `ringo -h` to see the help.