szTheory

Fix Markdown formatting on Github

Here's the build results https://travis-ci.org/szTheory/has-bit-field/jobs/364171409. You can see it's passing for - 1.9.3 - 2.0.0 - 2.1.0 and failing for - 2.2.0 - 2.3.0 - 2.4.0 I think this is...

Hi just noticed the latest issue was missing from the index