added first test

Author: Sahil Dawka

Diff for: .gitignore

@@ -5,3 +5,4 @@
 .idea/customer-js.iml
 .idea/workspace.xml
 yarn-error.log
+/node_modules/

Diff for: customer.js

@@ -232,4 +232,6 @@ function sendEvent(eventName, eventObject) {
             "segmentation": eventObject
         }]);
     }
-}
+}
+
+module.exports = {initCrm, validateEmail, identify, sendEvent};

Diff for: customer.test.js

@@ -0,0 +1,5 @@
+const crm = require('./customer');
+
+test("it has a validateEmail function that works", ()=>{
+    expect(crm.validateEmail('[email protected]')).toBe(true)
+});