Add test for version behavior

spec/version-spec.js

@@ -0,0 +1,16 @@
+const Behaviors = require('../src/behaviors');
+
+describe('Version Behavior', () => {
+  const botNick = 'testbot';
+  const versionBehavior = require('../src/behaviors/version');
+  const behaviors = new Behaviors(botNick, undefined, [], [versionBehavior]);
+
+  const versionResponse = `testbot is running package ${process.env.npm_package_name} at version ${process.env.npm_package_version}`;
+
+  it('should print information correctly', (done) => {
+    behaviors.getResponse(botNick, 'version').then(response => {
+      expect(response).toBe(versionResponse);
+      done();
+    });
+  });
+});