phantomjs is required to run the tests

cosminonea · cosminonea · commit ba4796940111 · 2015-06-03T23:31:43.000+01:00
diff --git a/Readme.md b/Readme.md
@@ -204,6 +204,7 @@ x('http://mat.io', {
 To run the tests, run:
 
 ```
+npm install phantomjs -g
 npm install
 make test
 ```
