feat(restructure): Project restructuring and improvements.

[quinnturner]

Separated yargs code and the auditing. This will support testing.

Removed babel as a dependency to reduce overhead.

NPM package uses lib folder instead of index.js.

bin/audit-ci references lib/audit-ci.js.

Audit rejections return Error. Audit passes return the report.

Use console.log and console.error instead of process.stdout.write.

Added colour to output where appropriate.

Added lint test for Travis-CI and CircleCI.

Added node 10 to build for Travis-CI.

Updated package.json version to 1.1.0 (this may be bad practice to change in a PR, will not do this in the future).

Set the project's dependencies to be a static version to minimize the risk of introducing new vulnerabilities due to a hacked package version bump.

Supports issues: #4, #5.

Replaces PR: #14.

Signed-off-by: Quinn Turner quinn.turner@ibm.com

[quinnturner]

@andy-patt A few things were changed from the previous PR that you accepted:

1. console.log and console.error with colouring instead of process.stdout.write
2. Return after rejections:

   if (stderr) {
     callback(new Error(stderr), null);
     return;
   }
   

   and

   if (err) {
     reject(err);
     return;
   }
   

3. Rejections always return an Error rather than a sometimes an Error and sometimes a string
4. The final messages (pass and fail + Exiting...) got moved to audit-ci.js.
5. ESLint max-len was disabled for audit-ci-reporter.js for the JSDoc
6. Added JSDoc to the exported function audit