refine release job (#17)

* refine release job

* fix indentation

Author: liorheber

.travis.yml

@@ -21,17 +21,9 @@ script:
       yarn workspace @kenshooui/react-tree-docs chromatic;
     fi
 
-before_deploy:
-  - git config --local user.name "${GIT_NAME}"
-  - git config --local user.email "${GIT_EMAIL}"
-  - git remote rm origin
-  - git remote add origin https://${GIT_NAME}@github.com/kenshoo/react-tree.git
-  - git fetch origin --tags
-  - git checkout master && git pull origin master
-  - git branch --set-upstream-to origin/master master
-  - yarn build
-
 deploy:
   - provider: script
     script: yarn workspace @kenshooui/react-tree release
-    skip-cleanup: true
+    skip-cleanup: true
+    on:
+      all_branches: true