diff --git a/README.md b/README.md
index 5844950..bdf4ac1 100755
--- a/README.md
+++ b/README.md
@@ -14,12 +14,17 @@ The highlight features of LightLDA are
 * **Fast**: The sampler can sample millions of tokens per second per multi-core node.
 * **Lightweight**: Such big tasks can be trained with as few as tens of machines.
 
+## Requirements
+
+You need to have a functional build environment in order to proceed with building lightlda. On debian this is as simple as running
+
+``` $ sudo apt-get install build-essential libzmq3-dev```
+
 ## Quick Start
 
 Run ``` $ sh build.sh ``` to build lightlda.
 Run ``` $ sh example/nytimes.sh ``` for a simple example.
 
-
 ## Reference
 
 Please cite LightLDA if it helps in your research:
diff --git a/build.sh b/build.sh
index e127eb3..cba7da0 100644
--- a/build.sh
+++ b/build.sh
@@ -1,6 +1,6 @@
 # build lightlda
 
-git clone -b multiverso-initial git@github.com:Microsoft/multiverso.git
+git clone -b multiverso-initial https://github.com/Microsoft/multiverso.git
 
 cd multiverso
 cd third_party