renamed smoke test

- add notes about what it is intended to do, and what it cannot do

Signed-off-by: Christopher Hiller <boneskull@boneskull.com>

.travis.yml

@@ -77,7 +77,7 @@ jobs:
       before_install: true
       install: npm install --production
       name: 'Latest Node.js'
-      script: ./bin/mocha --no-config --reporter spec test/sanity/sanity.spec.js
+      script: ./bin/mocha --no-config --reporter spec test/smoke/smoke.spec.js
       cache:
         directories:
           - ~/.npm

test/smoke/smoke.spec.js

@@ -0,0 +1,15 @@
+'use strict';
+
+// This test ensures Mocha's dependencies are properly in place,
+// and is intended to be run after an `npm install --production` in a clean
+// working copy. It helps avoid publishing Mocha with `dependencies`
+// in `devDependencies` or otherwise in the wrong place.
+// It does not ensure that all files are present in the published package!
+
+var assert = require('assert');
+
+describe('a production installation of Mocha', function() {
+  it('should be able to execute a test', function() {
+    assert.ok(true);
+  });
+});