use pkg.homepage rather than ember-addon object

Author: spencer516

blueprints/ember-cli-addon-docs/index.js

@@ -57,7 +57,7 @@ module.exports = {
 
     if (!updatedDemoUrl) {
       this.ui.writeWarnLine(
-        `Unable to update the "ember-addon.demoUrl" configuration in your package.json. To include this for ` +
+        `Unable to update the "homepage" configuration in your package.json. To include this for ` +
         `including a link on Ember Observer, set it to https://{ORGANIZATION}.github.io/{REPO}`
       );
     }

lib/utils/update-demo-url.js

@@ -19,19 +19,17 @@ function repoFromPackage(packageJson) {
 
 module.exports = function updateDemoUrl(packageJsonPath, gitConfigPath) {
   const packageJson = fs.readJsonSync(packageJsonPath);
-  const addonConfig = packageJson['ember-addon'] || {};
-  const hasDemo = addonConfig.demoUrl;
 
-  if (hasDemo) {
+  // https://docs.npmjs.com/files/package.json#homepage
+  if (packageJson.homepage) {
     return true;
   }
 
   const repo = repoFromPackage(packageJson) || gitConfigUrl(gitConfigPath);
   const gitInfo = hostedGitInfo.fromUrl(repo);
 
   if (gitInfo) {
-    addonConfig.demoUrl = `https://${gitInfo.user}.github.io/${gitInfo.project}`;
-    packageJson['ember-addon'] = addonConfig;
+    packageJson.homepage = `https://${gitInfo.user}.github.io/${gitInfo.project}`;
 
     fs.writeJSONSync(packageJsonPath, packageJson, {
       spaces: 2

tests-node/fixtures/update-demo-url/ember-addon-missing/output.json

@@ -1,6 +1,4 @@
 {
   "repository": "https://github.com/ember-learn/ember-cli-addon-docs",
-  "ember-addon": {
-    "configPath": "tests/dummy/config"
-  }
+  "homepage": "https://www.somewhere-else.com"
 }

tests-node/fixtures/update-demo-url/ember-addon-present/output.json

@@ -0,0 +1,4 @@
+{
+  "repository": "https://github.com/ember-learn/ember-cli-addon-docs",
+  "homepage": "https://www.somewhere-else.com"
+}

tests-node/fixtures/update-demo-url/ember-addon-present/input.json renamed to tests-node/fixtures/update-demo-url/has-existing-homepage/input.json

@@ -1,8 +1,5 @@
 {
   "repository": {
     "url": "https://github.com/ember-learn/ember-cli-addon-docs"
-  },
-  "ember-addon": {
-    "configPath": "tests/dummy/config"
   }
 }

tests-node/fixtures/update-demo-url/has-existing-homepage/output.json

@@ -0,0 +1,6 @@
+{
+  "repository": {
+    "url": "https://github.com/ember-learn/ember-cli-addon-docs"
+  },
+  "homepage": "https://ember-learn.github.io/ember-cli-addon-docs"
+}

tests-node/fixtures/update-demo-url/repository-object/input.json renamed to tests-node/fixtures/update-demo-url/has-git-repository-object/input.json

@@ -0,0 +1 @@
+{}