update preinstall

.travis.yml

@@ -1,13 +1,14 @@
 sudo: required
 language: node_js
 node_js:
-- '10'
+  - "10"
+before_install:
+  - openssl aes-256-cbc -K $encrypted_8c2b83827436_key -iv $encrypted_8c2b83827436_iv
+    -in secrets.zip.enc -out secrets.zip -d
+  - unzip secrets.zip
 install:
-- npm install
+  - npm install
 script:
-- npm run compile
-- npm test
-- npm run coveralls
-before_install:
-- openssl aes-256-cbc -K $encrypted_8c2b83827436_key -iv $encrypted_8c2b83827436_iv
-  -in secrets.zip.enc -out secrets.zip -d
+  - npm run compile
+  - npm test
+  - npm run coveralls