Update readme and exit if invalid version

Author: eb-rubenespinosa

README.md

@@ -6,20 +6,14 @@ SEMVER validator
 
 ### `version`
 
-**Required** Version to validate. Default `"0.0.0"`.
-
-## Outputs
-
-### `is-valid`
-
-Return if version is valid.
+**Required** Version to validate.
 
 ## Example usage
 
 ```yaml
 uses: actions/semver-validation-action@master
 with:
-  version: '0.7.9'
+  version: ${{ github.event.release.tag_name }}
 ```
 
 ```yaml

index.js

@@ -6,19 +6,11 @@ try {
   const version = core.getInput('version');
   console.log(`Checking version: ${version}!`);
 
-  var isValid = false;
-  console.log(`isValid false`);
   var re = new RegExp("[0-9]+\.[0-9]+\.[0-9]+(-(0|[1-9]\d*|(beta|alpha).*))?$");
-  console.log(`RegExp`);
-  if (re.exec(version) != null) {
-    isValid = true;
-    console.log(`isValid true`);
+  if (re.exec(version) == null) {
+    core.setFailed("Invalid version");
   }
-  core.setOutput("is-valid", isValid);
-  console.log(`setOutput`);
-  // Get the JSON webhook payload for the event that triggered the workflow
-  const payload = JSON.stringify(github.context.payload, undefined, 2)
-  console.log(`The event payload: ${payload}`);
+
 } catch (error) {
   core.setFailed(error.message);
 }