Clearer introduction in readme

README.md

@@ -6,7 +6,7 @@ Fig
 
 Fast, isolated development environments using Docker.
 
-Define your app's environment with Docker so it can be reproduced anywhere.
+Define your app's environment with Docker so it can be reproduced anywhere:
 
     FROM orchardup/python:2.7
     ADD . /code
@@ -14,7 +14,7 @@ Define your app's environment with Docker so it can be reproduced anywhere.
     WORKDIR /code
     CMD python app.py
 
-Define your app's services so they can be run alongside in an isolated environment. (No more installing Postgres on your laptop!)
+Define your app's services so they can be run alongside in an isolated environment:
 
 ```yaml
 web:
@@ -27,6 +27,8 @@ db:
   image: orchardup/postgresql
 ```
 
+(No more installing Postgres on your laptop!)
+
 Then type `fig up`, and Fig will start and run your entire app:
 
 ![example fig run](https://orchardup.com/static/images/fig-example-large.f96065fc9e22.gif)