Replace analytics.js dependency with analytics.js-core

Author: ndhoule

component.json

@@ -21,7 +21,7 @@
     "yields/fmt": "*"
   },
   "development": {
-    "segmentio/analytics.js": "*",
+    "segmentio/analytics.js-core": "*",
     "segmentio/analytics.js-integration": "0.3.x",
     "segmentio/facade": "*"
   },

test/index.js

@@ -1,6 +1,6 @@
 
 var createIntegration = require('analytics.js-integration');
-var Analytics = require('analytics.js').constructor;
+var Analytics = require('analytics.js-core').constructor;
 var assert = require('assert');
 var facade = require('facade');
 var tester = require('../');