Fix Wrong AppVeyor badge

app/components/badge-appveyor.js

@@ -6,8 +6,22 @@ export default Component.extend({
     tagName: 'span',
     classNames: ['badge'],
 
+    id: alias('badge.attributes.id'),
     repository: alias('badge.attributes.repository'),
 
+    imageUrl: computed('badge.attributes.id', function() {
+        let id = this.get('badge.attributes.id');
+        let branch = this.get('branch');
+        if (id !== undefined && id !== null) {
+            return `https://ci.appveyor.com/api/projects/status/${id}/branch/${branch}?svg=true`;
+        } else {
+            let service = this.get('service');
+            let repository = this.get('repository');
+
+            return `https://ci.appveyor.com/api/projects/status/${service}/${repository}?svg=true&branch=${branch}`;
+        }
+    }),
+
     branch: computed('badge.attributes.branch', function() {
         return this.get('badge.attributes.branch') || 'master';
     }),

app/templates/components/badge-appveyor.hbs

@@ -1,6 +1,6 @@
 <a href="https://ci.appveyor.com/project/{{ repository }}">
     <img
-        src="https://ci.appveyor.com/api/projects/status/{{ service }}/{{ repository }}?svg=true&branch={{ branch }}"
+        src="{{ imageUrl }}"
         alt="{{ text }}"
         width="106"
         height="20"

src/badge.rs

@@ -15,6 +15,7 @@ pub enum Badge {
     },
     Appveyor {
         repository: String,
+        id: Option<String>,
         branch: Option<String>,
         service: Option<String>,
     },

src/tests/badge.rs

@@ -37,6 +37,7 @@ fn set_up() -> (Arc<App>, Crate, BadgeRef) {
 
     let appveyor = Badge::Appveyor {
         service: Some(String::from("github")),
+        id: None,
         branch: None,
         repository: String::from("rust-lang/cargo"),
     };