Install git

RehanSaeed · RehanSaeed · commit a15556f3a3d1 · 2018-05-25T15:44:22.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -17,6 +17,7 @@ addons:
     - libssl-dev
     - libunwind8
     - zlib1g
+    - git
 
 # .NET CLI requires OSX 10.11
 osx_image: xcode7.2
