Use kredits-contracts from npm

This also configures the npm scripts to work with locally deployed
contracts

package.json

@@ -16,6 +16,7 @@
   "repository": "",
   "scripts": {
     "start": "ember server",
+    "start-local": "KREDITS_CONTRACT_ADDR=`kredits-inspect -c Kredits -r -w address` TOKEN_CONTRACT_ADDR=`kredits-inspect -c Token -r -w address` npm start",
     "test": "ember test",
     "postinstall": "bower install",
     "build": "ember build",
@@ -25,7 +26,8 @@
     "kredits-console": "kredits-console",
     "kredits-parity": "kredits-parity",
     "kredits-deploy": "kredits-deploy",
-    "kredits-inspect": "kredits-inspect"
+    "kredits-inspect": "kredits-inspect",
+    "kredits-seed": "kredits-seed"
   },
   "devDependencies": {
     "babel-preset-es2015": "^6.22.0",
@@ -51,7 +53,7 @@
     "ember-load-initializers": "^0.5.1",
     "ember-resolver": "^2.0.3",
     "ipfs-api": "^12.1.7",
-    "kredits-contracts": "67p/kredits-contracts",
+    "kredits-contracts": "^2.0.4",
     "loader.js": "^4.0.10",
     "web3": "^0.18.2"
   },