Fix the typo

aoki · aoki · commit 0e138f34834a · 2016-05-24T17:43:40.000+09:00
diff --git a/README.md b/README.md
@@ -21,7 +21,7 @@ Python ver: 2.7, 3.4, 3.5
 # Installation:
 
 ```bash
-pip isntall jenkins-cli
+pip install jenkins-cli
 ```
 
 or
