Add Web3 library and service

app/controllers/index.js

@@ -1,11 +1,16 @@
 import Ember from 'ember';
 
 const {
-  computed
+  computed,
+  inject: {
+    service
+  }
 } = Ember;
 
 export default Ember.Controller.extend({
 
+  kredits: service(),
+
   contributorsCount: computed('model.contributors.[]', function() {
     return this.get('model.contributors').length;
   }),

app/services/kredits.js

@@ -0,0 +1,40 @@
+import Ember from 'ember';
+import Web3 from 'npm:web3';
+
+export default Ember.Service.extend({
+
+  web3Instance: null,
+
+  web3: function() {
+    if (Ember.isPresent(this.get('web3Instance'))) {
+      return this.get('web3Instance');
+    }
+
+    let web3Instance;
+
+    if (typeof window.web3 !== 'undefined') {
+      Ember.Logger.debug('[web3] Using user-provided instance, e.g. from Mist browser or Metamask');
+      web3Instance = window.web3;
+    } else {
+      Ember.Logger.debug('[web3] Creating new instance from npm module class');
+      let provider = new Web3.providers.HttpProvider("http://localhost:8545");
+      web3Instance = new Web3(provider);
+    }
+
+    this.set('web3Instance', web3Instance);
+
+    return web3Instance;
+  }.property('web3Instance'),
+
+  contract: function() {
+    // let web3 = this.get('web3');
+    let contract = null;
+
+    return contract;
+  }.property('web3'),
+
+  totalSupply: function() {
+    return 23000;
+  }.property()
+
+});

app/templates/index.hbs

@@ -8,7 +8,7 @@
     {{contributor-list contributors=model.contributors}}
 
     <p class="stats">
-      <span class="number">{{kreditsSum}}</span> kredits issued and distributed among
+      <span class="number">{{kredits.totalSupply}}</span> kredits issued and distributed among
       <span class="number">{{contributorsCount}}</span> contributors.
     </p>
   </div>