Improve code quality and write tests

node_modules/codecov/lib/services/travis.js

@@ -0,0 +1,19 @@
+module.exports = {
+  detect: function() {
+    return !!process.env.TRAVIS
+  },
+
+  configuration: function() {
+    console.log('    Travis CI Detected')
+    return {
+      service: 'travis',
+      commit: process.env.TRAVIS_COMMIT,
+      build: process.env.TRAVIS_JOB_NUMBER,
+      branch: process.env.TRAVIS_BRANCH,
+      job: process.env.TRAVIS_JOB_ID,
+      pr: process.env.TRAVIS_PULL_REQUEST,
+      slug: process.env.TRAVIS_REPO_SLUG,
+      root: process.env.TRAVIS_BUILD_DIR,
+    }
+  },
+}