[S] Only run deployment after merge and not in PR pushes. (#49)

Author: Dennis Schwartz

.travis.yml

@@ -12,7 +12,7 @@ jobs:
     - python manage.py makemigrations
     - python manage.py migrate
   - stage: deploy-dev
-    if: branch = master
+    if: branch = master AND type = push
     before_script:
     - docker pull philm/ansible_playbook
     - git clone -b master https://github.com/biojs/biojs-backend-ansible.git
@@ -27,7 +27,7 @@ jobs:
       philm/ansible_playbook dev-deploy.yml
       --private-key=~/.ssh/id_rsa -u ubuntu -i dev_hosts
   - stage: deploy-production
-    if: branch = production
+    if: branch = production AND type = push
     before_script:
     - docker pull philm/ansible_playbook
     - git clone -b production https://github.com/biojs/biojs-backend-ansible.git