fix travis

.travis.yml

@@ -50,7 +50,7 @@ jobs:
       script:
       - |
         PACKAGE_JSON_DIFF=$(git diff --name-only $TRAVIS_COMMIT_RANGE package.json) && \
-        test -z "$PACKAGE_JSON_DIFF" && exit 1
+        test -z "$PACKAGE_JSON_DIFF" && exit 1 || exit 0
 
     - name: Check release notes authored (docs/releases/v?.?.?.md)
       if: |
@@ -61,14 +61,13 @@ jobs:
         VERSION_NUM=$(jq '.version' < package.json) && \
         VERSION_NUM=${VERSION_NUM#\"} && \
         VERSION_NUM=${VERSION_NUM%\"} && \
-        test -f docs/releases/v$VERSION_NUM.md || exit 1
+        test -f docs/releases/v$VERSION_NUM.md && exit 0 || exit 1
 
     - name: Release notes linked in mkdocs.yml
       if: |
         (type = pull_request AND branch = staging) OR \
         (type = pull_request AND branch = master AND NOT head_branch = staging)
       script:
-      - which test
       - VERSION_NUM=$(jq '.version' < package.json)
       - VERSION_NUM=${VERSION_NUM#\"} 
       - VERSION_NUM=${VERSION_NUM%\"} 
@@ -76,7 +75,7 @@ jobs:
       - cat mkdocs.yml
       - GREP_VERSION_NUM=$(cat mkdocs.yml | grep $VERSION_NUM)
       - 'echo GREP_VERSION_NUM: $GREP_VERSION_NUM'
-      - test -z "$GREP_VERSION_NUM" && echo "EMPTY" || echo "NON EMPTY"
+      - test -z "$GREP_VERSION_NUM" && exit 1 || exit 0
 
     # Temporarily disabling browserstack e2e tests. They seem to fail without any reason