README.md in pgdexter-0.1.5 vs README.md in pgdexter-0.1.6

@@ -2,16 +2,17 @@
 
 The automatic indexer for Postgres
 
 [Read about how it works](https://medium.com/@ankane/introducing-dexter-the-automatic-indexer-for-postgres-5f8fa8b28f27)
 
+[![Build Status](https://travis-ci.org/ankane/dexter.svg?branch=master)](https://travis-ci.org/ankane/dexter)
+
 ## Installation
 
 First, install [HypoPG](https://github.com/dalibo/hypopg) on your database server. This doesn’t require a restart.
 
 ```sh
-wget https://github.com/dalibo/hypopg/archive/1.0.0.tar.gz
-tar xf 1.0.0.tar.gz
+curl -L https://github.com/dalibo/hypopg/archive/1.0.0.tar.gz | tar -x
 cd hypopg-1.0.0
 make
 make install # may need sudo
 ```