fixed the group variable

Author: nustiueudinastea

.travis.yml

@@ -13,7 +13,7 @@ before_install:
   - make test-image deps
 
 env:
-  - GROUP="${FORK-:weaveworksdemos}" COMMIT="${TRAVIS_COMMIT}" TAG="${TRAVIS_TAG}" REPO=front-end;
+  - GROUP=weaveworksdemos COMMIT="${TRAVIS_COMMIT}" TAG="${TRAVIS_TAG}" REPO=front-end;
 
 script:
   - make test