Update README and node versions requirement (#52)

* use jest instead of ava

* update readme about tests

* remove yarn.lock to stick with only package-lock

* update node version requirement

* update node versions for travis

* update node versions for travis

.travis.yml

@@ -1,8 +1,7 @@
 language: node_js
 node_js:
-  - "6"
-  - "7"
-  - "8"
+  - "10"
+  - "14"
 after_success:
   - npm run coverage
   - npm run coveralls

README.md

@@ -6,10 +6,10 @@
 [![npm version](https://badge.fury.io/js/subtitle.svg)](http://badge.fury.io/js/subtitle)
 [![JavaScript Style Guide](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](http://standardjs.com/)
 
-Parse, manipulate and stringify SRT (SubRip) format. WebVTT as input is 
+Parse, manipulate and stringify SRT (SubRip) format. WebVTT as input is
 also supported.
 
->["Thanks for this rad package!"](https://github.com/gsantiago/subtitle.js/pull/15#issuecomment-282879854)  
+>["Thanks for this rad package!"](https://github.com/gsantiago/subtitle.js/pull/15#issuecomment-282879854)
 >John-David Dalton, creator of Lodash
 
 ## Installation
@@ -102,7 +102,7 @@ parse(mySrtOrVttContent)
 
 The reverse of `parse`. It gets an array with subtitles and converts it to a valid SRT string.
 
-The `stringifyVtt(captions: Array) -> String` function is also available for converting to a 
+The `stringifyVtt(captions: Array) -> String` function is also available for converting to a
 valid WebVTT string.
 
 ```js
@@ -208,7 +208,7 @@ toVttTime(24400)
 
 ## Tests
 
-Subtitle.js uses [AVA](https://github.com/avajs/ava) for running tests and [nyc](https://github.com/istanbuljs/nyc) for code coverage.
+Subtitle.js uses Jest for tests.
 
 If you want to run these tests, you need to install all devDependencies:
 
@@ -222,11 +222,7 @@ Now you can run the tests with the following command:
 
 You can check the code coverage by running the following command:
 
-`npm run coverage`
-
-If you want a pretty HTML report, run the following:
-
-`npm run report`
+`npm run test:coverage`
 
 Your report will be available in the `coverage` folder.
 

package.json

@@ -25,7 +25,7 @@
     "stringify"
   ],
   "engines": {
-    "node": ">= 6"
+    "node": ">= 10"
   },
   "author": "Guilherme Santiago",
   "license": "MIT",