Add npm script to run app with local network

npm run start:local - sets NETWORK_ID and WEB3_PROVIDER_URL to local
network defaults

README.md

@@ -22,7 +22,8 @@ You will need the following things properly installed on your computer.
 
 ## Running / Development
 
-* `ember serve`
+
+* `ember serve` - by default kredits-web connects to the Ethreum Kovan network
 * Visit your app at [http://localhost:4200](http://localhost:4200).
 * Visit your tests at [http://localhost:4200/tests](http://localhost:4200/tests).
 
@@ -90,7 +91,7 @@ Get your local Ethereum development node running.
 With IPFS and Ethereum/ganache running, you can now start this Ember app.
 
   * `npm link kredits-contracts` - link the local `truffle-kredits` package (it will become `kredits-contracts` soon)
-  * `npm start`
+  * `npm run start:local` - NETWORK_ID=100 and WEB3_PROVIDER_URL=http://localhost:7545 must be set for local settings
 
 #### IPFS