chore(ci): add travis deps to run WebKit Linux (#159)

.travis.yml

@@ -5,6 +5,16 @@ addons:
     packages:
       # This is required to run new chrome on old trusty
       - libnss3
+      # These are required to run webkit
+      - libwoff1
+      - libopus0
+      - libwebp6
+      - libwebpdemux2
+      - libenchant1c2a
+      - libgudev-1.0-0
+      - libsecret-1-0
+      - libhyphen0
+      - libgdk-pixbuf2.0-0
 notifications:
   email: false
 cache: