chore: try to fix ci

Author: SimonSiefke

Diff for: .travis.yml

@@ -6,7 +6,7 @@ if: tag IS blank
 
 install:
   - |
-    npm ci
+    npm i
   - |
     if [ $TRAVIS_OS_NAME == "linux" ]; then
       export DISPLAY=':99.0'

Diff for: CHANGELOG.md

@@ -0,0 +1,5 @@
+# Changelog
+
+| Version | Date     | Changelog       |
+| ------- | -------- | --------------- |
+| 1.0.0   | 14.01.20 | Initial release |

Diff for: packages/extension/package.json

@@ -3,7 +3,11 @@
   "displayName": "Prettier - Code formatter",
   "description": "Code formatter using prettier",
   "publisher": "SimonSiefke",
-  "version": "1.0.0",
+  "version": "1.0.0-dev",
+  "galleryBanner": {
+    "color": "#ffe04b",
+    "theme": "light"
+  },
   "engines": {
     "vscode": "^1.41.1"
   },