fix: use npm instead of yarn

Author: elevatebart

.travis.yml

@@ -23,19 +23,19 @@ stages:
   - name: demo
     if: type != pull_request AND branch = master
   - name: release
-    if: type != pull_request AND branch = master  
+    if: type != pull_request AND branch = master
 
 jobs:
   include:
     - stage: test
       script:
         - npx danger ci
-        - yarn lint
-        - yarn test:unit --runInBand
-        - yarn test:e2e --headless
+        - npm run lint
+        - npm run test:unit --runInBand
+        - npm run test:e2e --headless
 
     - stage: demo
-      script: yarn build:demo
+      script: npm run build:demo
       deploy:
         skip_cleanup: true
         provider: surge
@@ -44,5 +44,5 @@ jobs:
 
     - stage: release
       script:
-        - yarn build
+        - npm run build
         - npx semantic-release

README.md

@@ -37,30 +37,31 @@ Check out the [demo](http://vue-live.surge.sh) for alernative syntaxes to write
 
 ## How to contribute
 
-```
-yarn install
+```sh
+npm ci
 ```
 
 ### Compiles and hot-reloads for development
 
-```
-yarn serve
+```sh
+npm run start
 ```
 
 ### Compiles and minifies library for production using rollup
 
-```
-yarn build
+```sh
+npm run build
 ```
 
-### Run your tests
+### Run unit and e2e tests
 
-```
-yarn test:unit
+```sh
+npm run test:unit
+npm run test:e2e
 ```
 
 ### Lints and fixes files
 
-```
-yarn lint
+```sh
+npm run lint
 ```