Added dependency installation (#135)

Closes #134

Signed-off-by: Russ Miles <russ@russmiles.com>

Author: russmiles

README.md

@@ -168,6 +168,12 @@ those dependencies.
 [venv]: http://chaostoolkit.org/reference/usage/install/#create-a-virtual-environment
 
 
+```console
+$ pip install -r requirements-dev.txt -r requirements.txt
+```
+
+Then, point your environment to this directory:
+
 ```console
 $ pip install -e .
 ```