Add configurable network name

This is required for the infura provider

app/services/kredits.js

@@ -29,6 +29,7 @@ export default Service.extend({
     return new RSVP.Promise((resolve) => {
       let ethProvider;
       let networkId;
+      let networkName;
       if (typeof window.web3 !== 'undefined') {
         console.debug('[kredits] Using user-provided instance, e.g. from Mist browser or Metamask');
         networkId = parseInt(window.web3.version.network);
@@ -43,8 +44,9 @@ export default Service.extend({
       } else {
         console.debug('[kredits] Creating new instance from npm module class');
         networkId = parseInt(config.contractMetadata.networkId);
-        console.log(networkId)
-        ethProvider = new ethers.providers.InfuraProvider({ chainId: networkId, name: 'kovan' });
+        networkName = config.contractMetadata.networkName;
+        console.log(networkName);
+        ethProvider = new ethers.providers.InfuraProvider({ chainId: networkId, name: networkName });
         resolve(ethProvider, null);
       }
     });